12 TEMPORARY TRAFFIC CONTROL
12-1 General
12-1.01 General
Section 12 -1 includes general specifications for providing temporary traffic control . Temporary traffic control, including flagging, apparel, temporary traffic control devices, and equipment for flaggers, must comp ly with the California MUTCD , Part 6, "Temporary Traffic Control."
12-1.02 Materials
Not Used
12-1.03 Construction
Assign flaggers to:
1.Control traffic
2.Warn the public of any dangerous conditions resulting from the work activities
3.Provide for the passage of traffic through the work as specified for the passage of traffic for public convenience and public safety Maintain flagging apparel, traffic control devices, and equipment for flaggers in good repair.
12-1.04 Payment
Not Used
12-2 Reserved
12-3 Temporary Traffic Control Devices
12-3.01 General
12-3.01A General
12-3.01A(1) Summary
Section 12 -3.01 includes general specifications for providing temporary traffic control devices . Providing temporary traffic control devices includes installing, placing, maintaining, repairing, replacing, relocating, and removing temporary traffic control devices. Do not use different types of channelizing devices on the same ali gnment. The types include plastic drums, portable delineators, channelizers, tubular markers, traffic cones, and Type I and Type II barricades.
12-3.01A(2) Definitions
Category 1 temporary traffic control devices: Small devices weighing less than 100 lb certified as crashworthy by crash testing or crash testing of similar devices. Category 1 temporary traffic control devices include traffic cones, plastic traffic drums, portable delineators, and channelizers. Category 2 temporary traffic control devices: Small devices weighing less than 100 lb that are not expected to produce significant changes in vehicular velocity but could cause harm to impacting vehicles. Category 2 temporary traffic control devices include barricades and portable sign supports. Category 3 temporary traffic control devices: Devices weighing 100 lb or more that are expected to produce significant changes in the vehicular velocity of impacting vehicles. These devices include crash cushions, impact attenuator vehicles, temporary barriers, and end treatments for barriers. orange: Orange, red -orange, fluorescent orange, or fluorescent red -orange. useable shoulder area : Any longitudinal paved or unpaved contiguous surface adjacent to the traveled way with:
1.Enough weight -bearing capacity to support temporary traffic control devices, such as flashing arrow signs, PCMSs, and impact attenuator vehicles
2.Slope not greater than 6:1 (horizontal:vertical) SECTION 1 2 TEMPORARY TRAFFIC CONTROL
12-3.01A(3) Submittals
At least 5 business days before starting any work using the devices or within 2 business days after the request if the devices are already in use , submit as informational submittals:
1.Self-certification for crashworthiness of Category 1 temporary traffic control devices. Either you or the manufacturer must perfor m the self -certification. Include: 1.1. Date 1.2. Federal aid number for a federal -aid contract 1.3. Contract number, district, county, route, and post miles of the project limits 1.4. Company name, street address, city, state, and zip code of the certifyi ng vendor 1.5. Printed name, signature, and title of the certifying person 1.6. Types of Category 1 temporary traffic control devices
2.List of proposed Category 2 temporary traffic control devices Obtain a standard form for self -certification from the E ngineer. Submit a sample of the type of portable delineator that you will be using before placing the delineators on the job site.
12-3.01A(4) Quality Assurance
Reserved
12-3.01B Materials
The condition of temporary traffic control devices must comply wi th the most current edition of the American Traffic Safety Services Association publication Quality Guidelines for Temporary Traffic Control Devices and Features . Category 2 temporary traffic control devices must be on FHWA's list of acceptable crashworthy Category 2 hardware for work zones. For this list, go to FHWA's Safety Program website. Category 2 temporary traffic control devices must be labeled with the FHWA acceptance letter code and the name of the manufacturer. The label must be legible and permanently affixed to the temporary traffic control device by the manufacturer. Category 3 temporary traffic control devices must be on the Authorized Material List for highway safety features. Retroreflectivity for the following materials must comply with Table 2A -3, "Minimum Maintained Retroreflectivity Levels," of the California MUTCD and be on the Authorized Material List for signin g and delineation materials:
1.Retroreflective sheeting for barricades
2.Retroreflective bands for portable delineators
3.Retroreflective sheeting for construction area signs
4.Retroreflective sheeting for channelizers
5.Reflectors for temporary barrier system
6.Retroreflective cone sleeves
7.White and orange retroreflective stripes for plastic traffic drums The following temporary traffic control devices must be visible from 1,000 feet during the hours of darkness under an illumination of legal hig h-beam headlights by persons with 20/20 vision or vision corrected to 20/20:
1.Retroreflective bands on portable delineators
2.Retroreflective sheeting on channelizers
3.Retroreflective cone sleeves on traffic cones
12-3.01C Construction
Perform all l ayout work necessary to place channelizing devices:
1.On the proper alignment SECTION 1 2 TEMPORARY TRAFFIC CONTROL
2.Uniformly at the location and spacing described
3.Straight on a tangent alignment
4.On a true arc in a curved alignment If temporary traffic control devices are damaged, d isplaced, or stop operating or functioning as described from any cause during the progress of the work, immediately repair, repaint, or replace the components and restore them to their original locations and positions. If ordered, furnish and place additio nal temporary traffic control devices. This work is change order work unless the temporary traffic control devices are being furnished and placed for public safety or public convenience. Level and plumb a portable system. Delineate the location of a traile r mounted system with a taper consisting of 9 traffic cones placed 25 feet apart, except where the system is placed within a lane closure or behind a barrier or guardrail. When a portable system is not in use, remove it from the job site, place it behind a barrier or guardrail, or move it to an area at least 15 feet from the edge of the traveled way.
12-3.01D Payment
Payment fo r a system with a DAY unit of measure is based on a continuous 24 -hour period. The 24 -hour period will start when the system is placed in operation at the first location.
12-3.02 Traffic Cones
12-3.02A General
12-3.02B Materials
A traffic cone must be flexible, orange , and manufactured from commercial -quality material designed for the intended purpose. The outer section of the portion above the base of the traffic cone must be translucent and fabricated of a highly pigmented, orange, PV compound. The overall height of a traffic cone must be at least 28 inches and the bottom inside diameter of the traffic cone must be at least 10.5 inches. During the hours of darkness, a traffic cone must have a retroreflective cone sleeve. Retroreflective cone sleeves must be permanentl y affixed, double -band, sleeves consisting of 2 white retroreflective bands. The top band must be 6 inches wide and placed a maximum of 4 inches from the top of the cone. The lower band must be 4 inches wide and placed 2 inches below the bottom of the top band. You may use traffic cones with double -band retroreflective cone sleeves during daylight hours.
12-3.02C Construction
Use the same type of retroreflective cone sleeve for all cones used on the project. Anchor the base of a traffic cone if it does not have enough size and weight to keep the cone in an upright position.
12-3.02D Payment
Not Used
12-3.03 Plastic Traffic Drums
12-3.03A General
12-3.03A(1) Summary
Section 12 -3.03 includes specifications for placing plastic traffic drums .
12-3.03A(2) Definitions
Reserved SECTION 1 2 TEMPORARY TRAFFIC CONTROL
12-3.03A(3) Submittals
Submit a certificate of compliance for plastic traffic drums.
12-3.03A(4) Quality Assurance
Reserved
12-3.03B Materials
A plastic traffic drum must comply with the manufacturer 's instructions for weight and ballast. A plastic traffic drum must:
1.Be orange LDPE
2.Be flexible and collapsible upon vehicle impact
3.Have a weighted base to maintain an upright position and prevent displacement by passing traffic
4.Have a height such that the top of the drum is at least 36 inches above the traveled way The weighted base must:
1.Be detachable
2.Be shaped to prevent rolling upon impact
3.Have a 38 -inch maximum outside diameter
4.Have a 4 -inch maximum height above the ground surface
12-3.03C Construction
Use 1 type of plastic traffic drum on the project. Use the same type and brand of retroreflective sheeting for all plastic traffic drums used on the project. Do not use sandbags or comparable ballast. Moving plastic traffic drums from location to location if ordered after initial placement is change order work.
12-3.03D Payment
Not Used
12-3.04 Portable Delineators
12-3.04A General
Section 12 -3.04 includes specifications for pl acing portable delineators .
12-3.04B Materials
A portable delineator, including its base, must be made of a material that has enough rigidity to remain upright when unattended and must be flexible or collapsible upon impact by a vehicle. The base must be
1.shaped to prevent rolling after impact and (2) anchored or weigh enough to keep the delineator in an upright position. Ballast for a portable delineator must comply with the manufacturer's instr uctions. A portable delineator must be a minimum of 36 inches in height. The vertical portion of a portable delineator must be predominantly orange. The post must be not less than 3 inches in width or diameter. Retroreflectorization of a portable delineato r that has a height of less than 42 inches must be provided by two 3 -inch-wide white bands placed a maximum of 2 inches from the top with a maximum of 6 inches between the bands. Retroreflectorization of a portable delineator that has a height of 42 inches or more must be provided by four 4 -to 6-inch-wide alternating orange and white stripes with the top stripe being orange.
12-3.04C Construction
Use only 1 type of portable delineator on the project.
12-3.04D Payment
Not Used SECTION 1 2 TEMPORARY TRAFFIC CONTROL
12-3.05 Channelizers
12-3.05A General
12-3.05B Materials
A channelizer must be on the Authorized Material List for signing and delineation materials. Its post must be orange. A channelizer must be affixed with 3 -by-12-inch, retroreflective, white sheeting.
12-3.05C Construction
Install channelizers on clean, dry surfaces. Cement the channelizer bases to the pavement as specified for cementing pavement markers to the pavement i n section 81 -3. When no longer required for the work, remove the channelizers and the underlying adhesive used to cement the channelizer bases to the pavement. Do not remove channelizers that are shown to be left in place at the time of work completion.
12-3.05D Payment
Not Used
12-3.06 12-3.09 Reserved
12-3.10 Barricades
12-3.10A General
12-3.10B Materials
Markings for barricade rails must be alternating orange and whit e retroreflective stripes. Orange retroreflective sheeting must match color PR no. 6, Highway Orange, of the FHWA Color Tolerance Chart. The interface between the rail surface and the retroreflective sheeting must be free of air bubbles or voids. The predo minant color of barricade components other than the rails must be white or unpainted galvanized metal or aluminum. You may use a Type III barricade as a sign support if the barricade has been successfully crash tested under NCHRP Report 350 criteria or the Manual for Assessing Safety Hardware (MASH) crash testing guidelines as a single unit with an attached sign panel of the size and type to be used. A sign panel for a construction area sign or marker panel to be mounted on a barricade must comply with section 12 -3.11B(2). Do not imprint an owner identification on the retroreflective face of any rail.
12-3.10C Construction
Place each barricade such that the stripes slope downward in the direction road users are to pass. Place each sand -filled bag near the ground level on the lower parts of the frame or stays to serve as ballast for the barricades. Do not place ballast on top of barricades or over any retroreflective barricade rail face that is facing traffic. Do not remove barricade s that are shown to be left in place at the time of work completion. Moving a barricade from location to location is change order work if ordered after initial placement of the barricade. SECTION 1 2 TEMPORARY TRAFFIC CONTROL
12-3.10D Payment
Not Used
12-3.11 Construction Area Signs
12-3.11A General
12-3.11A(1) Summary
Section 12 -3.11 includes specifications for placing construction area signs . Construction area signs include general information signs and all temporary signs an d object markers required for the direction of traffic within the project limits .
12-3.11A(2) Definitions
background: Dominant sign color. legend: Letters, numerals, tildes, bars, arrows, route shields, symbols, logos, borders, artwork, and miscellaneous characters that are intended to convey specific meanings on traffic signs.
12-3.11A(3) Submittals
Reserved
12-3.11A(4) Quality Assurance
Reserved
12-3.11B Materials
12-3.11B(1) General
Construction area sign must be the product of a commercial sign man ufacturer . The style, font, size, and spacing of the legend must comply with the Standard Alphabets published in the FHWA's Standard Highway Signs Book. The sign must be visible from 500 feet and legible from 300 feet at noon on a cloudless day and during the hours of darkness under an illumination of legal low -beam headlights by persons with 20/20 vision or vision corrected to 20/20. A fabric sign panel on a portable sign is not subject to the visibility and legibility requirements for headlight illuminati on during the hours of darkness. Construction area warning and guide signs must have a black legend on a retroreflective, fluorescent orange background. W10 -1 advance warning sign for highway -rail grade crossings must have a black legend on a retroreflecti ve fluorescent yellow background.
12-3.11B(2) Stationary -Mounted Signs
Stationary -mounted sign must comply with section 82 -2. A temporary sign support of any type placed within 15 feet from the edge of the traveled way must comply with the specifications for a Category 2 temporary traffic control device . The sign post must be good, sound wood posts with the breakaway feature as shown for a roadside sign. Fastening hardware and back braces must be commercial -quality materials.
12-3.11B(3) Po rtable Signs
Each portable sign must consist of a base, standard or framework, and a sign panel. Units delivered to the job site must be capable of being placed into immediate operation. A sign panel for a port able sign must comply with the specifications for a stationary -mounted sign panel or be fabricated from one of the following materials:
1.Type VI, retroreflective, elastomeric roll -up fabric
2.Nonretroreflective, cotton, drill fabric
3.Nonretroreflectiv e, flexible, industrial, nylon fabric
4.Another type of fabric if authorized SECTION 1 2 TEMPORARY TRAFFIC CONTROL Do not use nonretroreflective portable signs during the hours of darkness. The bottom of the portable sign panel must be at least 1 foot above the edge of the traveled way.
12-3.11B(4) Temporary Object Markers
A temporary object marker must be mounted on a stationary wood or metal post and must comply with section 82. A marker panel for a Type N (CA), Type P (CA), or Type R (CA) object marker must comply with the specifications for a marker panel for a stationary sign panel in section 12 -3.11B(2). A target plate, post, and the hardware for a Type K (CA) and Type L (CA) temporary object marker must comply with the specifications for these items in section 82.
12-3.11B(5) General Information Signs
12-3.11B(5)(a) General
Reserved
12-3.11B(5)(b) Construction Project Funding Identification Signs
Construction project funding identification sign must:
1.Comply with: 1.1. Section 6F.109(CA) of the California MUTCD 1.2. Section 82 -2.02E 1.3. Specifications on the Department's Safety Programs website
2.Be 48 by 30 inc hes for local roadway s
3.Be 96 by 60 inch es for conventional highways
4.Be 132 by 78 inches for freeways and expressways
12-3.11C Construction
12-3.11C(1) General
Place all construction area signs outside of the traveled way. Do not block a bicycle or pedestrian pathway with a construction area sign. Place, install, maintain, and remove temporary object markers shown as construction area signs as specified f or construction area signs. Maintain accurate information on construction area signs. Immediately replace or correct signs that convey inaccurate information. During the progress of work, immediately cover or remove unneeded signs. Cover each unneeded sign such that the message cannot be seen. Securely fasten the cover to prevent movement from wind. Check each covered sign daily for damage to the cover and immediately replace any cover if needed. Clean each construction area sign panel at the time of instal lation and at least once every 4 months thereafter. Be prepared to furnish additional construction area sign panels, posts, and mounting hardware or portable sign mounts on short notice due to changing traffic conditions or damage caused by traffic or other conditions. Maintain an inventory of commonly required items at the job site or make arrangements with a supplier who is able to furnish the items daily on short notice. Replace any damaged construction area sign or repair the sign if authorized. Remove any sign panel that exhibits irregular luminance, shadowing, or dark blotches at nighttime under vehicular headlight illumination.
12-3.11C(2) Stationary -Mounted Signs
Install stationary -mounted signs as described for the installation of roadside signs except: SECTION 1 2 TEMPORARY TRAFFIC CONTROL
1.Back braces and blocks for sign panels are not required for signs 48 inches or smaller in width and diamond -shaped signs 48 by 48 inches or small er.
2.Bottom of the sign panel must be at least 7 feet above the edge of the traveled way.
3.You may install a construction area sign on an above -ground, temporary platform sign support or on an existing lighting standard or other support if authorized. Do not make holes in a standard to support the sign if it is installed on an existing lighting standard.
4.Post embedment must be at least 2.5 feet if the post hole is backfilled around the post with commercial -quality concrete. The concrete must contain at least 295 pounds of cementitious material per cubic yard. The Engineer determines the post size and number of posts if the type of sign installation is not shown. Excavate each post hole by hand methods without the use of power equipment. You may use p ower equipment where you determine that subsurface utilities are not present in the area of the proposed post hole if authorized. The post -hole diameter must be at least 4 inches greater than the longest cross - sectional dimension of the post if it is backf illed with commercial -quality concrete. Furnishing, installing, maintaining, moving, and removing any additional construction area signs if ordered is change order work.
12-3.11C(3) General Information Signs
12-3.11C(3)(a) General
Reserved
12-3.11C(3)(b) Construction Project Funding Identification Signs
Do not add information to a construction project funding identification sign unless authorized. Install construction project funding identification signs before starting major work activitie s visible to highway users. Mount construction project funding identification signs on a wood posts under section 82 -3.
12-3.11D Payment
Not Used
12-3.12 Telescoping Flag Trees
12-3.12A General
Section 12 -3.12 includes specifications for placing telesco ping flag trees.
12-3.12B Materials
Telescoping flag trees must be manufactured from commercial -quality material designed for the intended purpose and capable of maintaining an upright positio n at all times while in use.
12-3.12C Construction
Not Used
12-3.12D Payment
Not Used
12-3.13 12-3.19 Reserved
12-3.20 Temporary Barrier Systems
12-3.20A General
12-3.20A(1) Summary
Section 12 -3.20 includes specifications for placing, maintaining, re pairing, and removing temporary barrier systems. Temporary barrier system consists of:
1.New or undamaged used interconnected barrier segments
2.Segment connection hardware SECTION 1 2 TEMPORARY TRAFFIC CONTROL
3.Stakes and anchor bolts
12-3.20A(2) Definitions
clear area width: Minimum width through out the length of the barrier system that must be maintained clear of obstructions, objects, and work resources during non -working hours. The width is measured perpendicular from the non -traffic side toe. set back distance : Space meas ured between the closest toe of temporary barrier and the edge of traveled way for both directions of traffic.
12-3.20A(3) Submittals
Submit as informational submittal for each type of temporary barrier system:
1.Certificate of compliance
2.Manufacturer 's installation instructions except for Type K temporary railing Submit a signed manufacturer's replacement evaluation report within 10 days of damage to a temporary steel barrier system.
12-3.20A(4) Quality Assurance
12-3.20A(4)(a) General
Except for T ype K temporary railing, temporary barrier systems must:
1.Be on the Authorized Materials List for highway safety features
2.Comply with MASH Test Level 3 requirements
3.Comply with the manufacturer's drawings shown on the Department 's Division of Safety Programs website and the manufacturer's installation instructions If a discrepancy exists , governing ranking in descending order is :
1.These specifications
2.Manufacturer's drawing s
3.Manufacturer's installation instructions
12-3.20A(4)(b) Quality Control
Replace damaged temporary concrete barrier segments with exposed reinforcing steel or concrete spalls 1-1/2 inches in depth and 4 inches in width or greater. Replace damaged temporary steel barrier segments with permanent be nds, tearing, or buckling as described in the signed manufacturer's replacement evaluation report. Realign temporary barrier system within 2 days of impact or displacement when displaced more than 3 inches.
12-3.20B Materials
12-3.20B(1) General
Temporar y barrier segment must:
1.Be a minimum 31 -1/2 inches in height
2.Have at least two lifting holes
3.Be designed to be used with temporary traffic screen when required Temporary barrier segment may have your name or logo on each barrier segment. The name or logo must be no more than 4 inches in height and must be located no more than 12 inches above the bottom of the barrier segment.
12-3.20B(2) Temporary Concrete Barriers
12-3.20B(2)(a) General
Temporary concrete barrier segment must: 2 SECTION 1 2 TEMPORARY TRAFFIC CONTROL
1.Be precast con crete with a minimum 4,000 -psi compressive strength . Have reinforcement steel that complies with section 52 .
3.Have a finished surface that complies with section 51 -1.03F(2) .
4.Comply with the requirements for precast concrete .
5.Include the manufactu rer's name, lot number , and month and year of manufacture stamped on the top of each barrier segment except for Type K temporary railing . The stamped information must be : 5.1. No more than 6 inches in height . 5.2. No more than 1 2 inches in length . 5.3. From 3/16 to 1/4 inch in depth. 5.4. Centered on the top width of the barrier segment. Segment connection hardware must be one of the following:
1.Steel bar loops and connecting pins
2."J" hook steel plates Steel bar loops must comply with ASTM A36/A36M. Connecting pins must comply with ASTM A307. A round bar of the same diameter may be substituted for the connecting pins. The round bar must:
1.Comply with ASTM A36/A36M
2.Have a minimum length of 26 inches
3.Have a 3 -inch-diameter, 3/8 -inch-thick plate welded on the upper end using a 3/16 -inch fillet weld "J" hook steel plates must be a minimum 18 inches in height.
12-3.20B(2)(b) Temporary Concrete Barrier with "J" Hooks
The steel stakes must be 1 -1/2 inches in diameter and 48 inches long. Anchor hardware must include:
1.1-inch-diameter, 6 -inch-long anchor bolt insert
2.1-inch-diameter hex head bolt with a minimum length of 11 inches plus thickness of asphalt overlay
3.3-by-3-by-3/8-inch plate washer
4.Retainer ring
12-3.20B(2)(c) Type K Temporary Railing
Reserved
12-3.20B(2)(d) 12-3.20B(2)(g) Reserved
12-3.20B(3) Temporary Steel Barriers
Temporary steel barriers segment must:
1.Be galvanized steel .
2.Comply with ASTM A36 .
3.Have a joint connection .
4.Include permanent identification information with no more than 6 inches in height and 1 2 inches in length and centered on the top width of the segment. The identification information must include: 4.1. Manufacturer's name 4.2. Serial number 4.3. Lot number 4.4. Month and year of manufacture
12-3.20B(4) 12-3.20B(9) Reserved
12-3.20B(10) Temporary Terminal Sections
Reserved SECTION 1 2 TEMPORARY TRAFFIC CONTROL
12-3.20C Construction
12-3.20C(1) General
Clean temporary barrier segments at time of installation and at least every 6 months there after. Install the temporary barrier system based on the requirements shown in the following table: Minimum Clear Area Width Barrier Configuration Height differentials 3 feet or less (ft) Height differentials greater than 3 ft up to 8 feet (ft) Edge of deck or height differentials greater than 8 feet (ft) Fixed objects , falsework members, or temporary supportsa (ft) 12'-6" temporary concrete barrier with "J" hooks Freestanding 3 4 8 7 3 stakes per segment traffic side 1 1 2 3 2 anchor bolts per segment traffic side 1 1 2 3 20-foot temporary concrete barrier with "J" hooks Freestanding 3 4 8 7 4 stakes per segment traffic side 1 1 2 3 3 anchor bolts per segment traffic side 1 1 2 3 50-foot temporary steel barrier Staked or anchored at both ends only 6 7 9 10 Staked or anchored every 250 feet 5 6 8 9 Staked or anchored every 33 feet 1 1 3 4 20-foot Type K temporary railing Freestanding 2 3 8 7 2 stakes or 2 anchor bolts per segment traffic side 1 1 3 4 4 stakes or 4 anchor bolts per segment N/A N/A 3 3 aThe minimum clear area width to a falsework or temporary support footing can be 2 feet less than the clear area width shown. Measure clear area width to the footing edge closest to traffic . Stake down temporary barrier system when placed on an asphalt concrete surface . Anchor down temporary barrier system when placed on a concrete surface . For bridge decks, c onfirm th e anchor will not penetrate closer than 1 -1/2 inches from the bottom of the deck before placement. When temporary barrier is not shown, request the Engineer to verify the bridge deck thickness. For installations on concrete surfaces, drill holes and bond threaded rods or dowels under section 51 -1. Do not drill the top of supporting beams or girders, bridge expansion joints, or drains. SECTION 1 2 TEMPORARY TRAFFIC CONTROL Install stakes and anchor bolts so the heads do not project above the top of the temporary barrier pocket profile. Install a reflector on the top or face of barrier segments placed within 10 feet of a t raffic lane. Space reflectors at approximately 20 -foot intervals. Apply adhesive for mounting the reflector under the reflector manufacturer's instructions. Install a Type P marker panel complying with section 82 at each end of temporary barrier system pla ced adjacent to a two -lane, two -way highway and at the end facing traffic for temporary barrier installed adjacent to a one -way roadbed. If the temporary barrier is placed on a skew, install the marker at the end of the skew nearest the traveled way. Maint ain a minimum height of 31 -1/2 inches above surface for temporary barrier. For paving activities adjacent to temporary barrier, do not pave within 2 feet of the barrier segments unless authorized. For paving under the temporary barrier, remove and reset th e barrier. Remove stakes and anchor bolts so that minimal damage is done to surface . After removing the temporary barrier system:
1.Restore the area to its previous condition or construct it to its planned condition if temporary excavation or embankment w as used to accommodate the temporary barrier.
2.Remove all threaded rods or dowels to a depth of at least 1 inch below the top of a concrete surface. Fill the resulting holes with mortar under section 51 -1 except cure the mortar by the water method or by the curing compound method using curing compound no. 6.
3.Repair a damaged asphalt surface by providing a clean, smooth edge around the damaged area . Repair any heaving caused by stake removal to provide a uniform surface. Remove loose debris and use comp ressed air to clean out the stake hole. Comply with manufacturer 's requirements except fill the stake hole with grout to existing pavement elevation under section 51 -1. If the Engineer orders a lateral move of a temporary barrier system and repositioning is not shown, the lateral move is change order work except for work area access , clear area width compliance , or because of your means and methods to perform the work .
12-3.20C(2) Temporary Concrete Barriers
12-3.20C(2)(a) General
Before pl acing temporary concrete barrier on the job site and after each described relocation, paint the exposed surfaces of the segments with white paint complying with specifications for acrylic emulsion paint for exterior masonry. Place and maintain the abutting ends of segments in alignment without substantial offset from each other. Install temporary barrier system with the last segment extending a minimum of 60 feet past the length of the protected area.
12-3.20C(2)(b) Temporary Concrete Barrier with "J" Hook s
Install a minimum 200 feet of temporary concrete barrier with "J" hooks. Place the temporary barrier system on a concrete or asphalt concrete surface . The asphalt concrete surface must have a minimum 2 inches of asphalt concrete over 6 inches of compacte d subbase. Install two parallel temporary barrier systems, one for each direction of travel, when placed between two - way traffic. Maintain the minimum clear area as shown in the table titled "Minimum Clear Area Width" between the two systems. Maintain a mi nimum 1 -foot set back distance.
12-3.20C(2)(c) Type K Temporary Railing
Do not install Type K temporary railing on projects advertised after December 31, 2026. Install a minimum 160 feet of Type K temporary railing. Excavate and backfill under section 19 -3. Do not compact earth fill placed behind Type K temporary railing in a curved layout. SECTION 1 2 TEMPORARY TRAFFIC CONTROL Place Type K temporary railing on a firm, stable surface. Grade the area to provide a uniform bearing surface throughout the entire length of the system. Anchor or stake down each end segment and every other segment with four stakes as shown when placed between two -way traffic. Maintain a minimum 1 -foot set back distance.
12-3.20C(2)(d) 12-3.20C(2)(g) Reserved
12-3.20C(3) Temporary Steel Barriers
12-3.20C(3)(a) Ge neral
Reserved
12-3.20C(3)(b) 50 -Foot Temporary Steel Barriers
Use 50 -foot temporary steel barriers with or without rubber pads. Install a minimum 250 feet of 50 -foot temporary steel barrier. The last segment must extend a minimum 25 feet past the length of the protected area. Place the temporary barrier system on a concrete or asphalt concrete surface . Do not place the system on a dirt or earth surface. Anchor or stake down the first and last segment of the temporary barrier system. Maintain a minimum rad ius of 800 feet for segments placed on a curved layout. For tighter curves down to a 250 -foot radius, contact the manufacturer before installation and provide manufacturer's written recommendation for the installation. Maintain a minimum 2 -foot set back distance on both sides of a temporary barrier system used with traffic on both sides of the barrier. Install the temporary barrier system under the manufacturer's instructions.
12-3.20C(3)(c) 12-3.20C(3)(h) Reserved
12-3.20C(4) 12-3.20C(9) Reserved
12-3.20C(10) Temporary Terminal Sections
Reserved
12-3.20D Payment
The payment quantity for the types of temporary barrier system is the length measured along the top of the barrier segments.
12-3.21 Temporary Traffic Screens
12-3.21A General
Section 12 -3.21 includes specifications for installing temporary traffic screens.
12-3.21B Materials
Temporary traffic screen panels must be one of the following:
1.CDX grade or better plywood
2.Weather -resistant strand board
3.Plastic Plastic temporary traffic screen panels must be on the Authorized Material List for temporary traffic screen. Wale boards for use with plywood or strand board must be Douglas fir, rough sawn, construction grade or better. Pipe screen supports must be schedule 40, galvanized steel pipe. Nuts, bolts, and washers must be cadmium plated. Screws must be black or cadmium -plated flat head, cross -slotted, with full -thread length. SECTION 1 2 TEMPORARY TRAFFIC CONTROL
12-3.21C Construction
Install and anchor temporary traffic screens to the top of the temporary barrier system . The temporary traffic screen must have 3 -foot-long openings spaced at 200 -foot intervals. A lateral move of temporary barrier system with attached temporary traffic screen is change order work if ordered and repositioning is not shown.
12-3.21D Pa yment
The payment quantity for temporary traffic screen is the length measured along the line of the screen with no deductions for openings in the temporary traffic screen.
12-3.22 Temporary Crash Cushion Modules
12-3.22A General
Section 12 -3.22 includes specifications for placing sand -filled temporary crash cushion modules in groupings or arrays. If activities expose traffic to a fixed obstacle, protect the traffic from the obstacle with a sand -filled temporary crash cushion. The crash cushion must be in place before opening traffic lanes adjacent to the obstacle.
12-3.22B Materials
Each sand -filled temporary crash cushion module must be manufactured after March 31, 1997 and be on the Authorized Material List for highway safety features. The color of eac h module must be standard yellow with black lids as furnished by the manufacturer. Each module must be free from structural flaws and objectionable surface defects. For a module requiring a seal, the top edge of the seal must be securely fastened to the wa ll of the module by a continuous strip of heavy -duty tape. Fill each module with sand under the manufacturer's instructions and to the sand capacity in pounds for each module shown. Sand for filling the modules must be clean, commercial -quality, washed con crete sand. When sand is placed in a module, the sand must contain no more than 7 percent water when tested under California Test 226.
12-3.22C Construction
Use the same type of crash cushion module for a single grouping or array. Temporary crash cushion arrays must not encroach on the traveled way. Secure the sand -filled modules in place before starting an activity requiring a temporary crash cushion. Maintain sand -filled temporary crash cushions in place at each location, including times when work is not actively in progress. You may remove the crash cushions during the work shift for access to the work if the exposed fixed obstacle is 15 feet or more from the nearest lane carrying traffic. Reset the crash cushion before the end of the work shift. Immedia tely repair sand -filled temporary crash cushion modules damaged due to your activities. Remove and replace any module damaged beyond repair. Repair and replacement of temporary crash cushion modules damaged by traffic is change order work. You may place sand -filled temporary crash cushion modules on movable pallets or frames complying with the dimensions shown. The pallets or frames must provide a full -bearing base beneath the modules. Do not move the modules and supporting pallets or frames by slid ing or skidding along the pavement or bridge deck. Attach a Type R or Type P marker panel to the front of the temporary crash cushion if the closest point of the crash cushion array is within 12 feet of the traveled way. Firmly fasten the marker panel to t he crash cushion with commercial quality hardware or by other authorized methods. Attach the Type R marker panel such that the top of the panel is 1 inch below the module lid. Attach the Type P marker panel such that the bottom of the panel rests upon the pallet or roadway surface if pallets are not used. SECTION 1 2 TEMPORARY TRAFFIC CONTROL A lateral move of a temporary crash cushion module is change order work if ordered and the repositioning is not shown. Remove sand -filled temporary crash cushion modules, including sand, pallets or frames, and marker panels, at Contract acceptance. Do not install sand -filled temporary crash cushion modules in the permanent work.
12-3.22D Payment
The payment quantity for temporary crash cushion module does not include:
1.Modules placed for public safety
2.Modules placed in excess of the number described
3.Repositioned modules
12-3.23 Impact Attenuator Vehicles
12-3.23A General
12-3.23A(1) Summary
Section 12 -3.23 includes specifications for using impact attenuator vehicles.
12-3.23A(2) Definitions
impact attenuator vehicle: Deployed impact attenuator mounted to a truck or deployed impact attenuator mounted to a trailer and towed by a truck.
12-3.23A(3) Submittals
Submit a certificate of compliance for each impact attenuator.
12-3.23A(4) Quality Assurance
Reserved
12-3.23B Materials
12-3.23B(1) General
Each impact attenuator vehicle includes:
1.Truck
2.Impact attenuator
3.Type II flashing arrow sign or PCMS
4.Flashing or rotating amber light
5.Two-way communication system
12-3.23B(2) Impact Attenuators
Each impact attenuator must:
1.Be on the Authorized Material List for highway safety features .
2.Comply with MASH test level 3 or NCHRP 350 test level 3 up to December 31, 2026, where the posted speed limit is 50 mph or mo re.
3.Comply with MASH test level 2 or 3 or NCHRP 350 test level 2 or 3 up to December 31, 2026, where the posted speed limit is 45 mph or less.
4.Be individually identified with the manufacturer's name, address, attenuator model number, and serial number. The name and number must be a minimum 1/2 -inch high , located on the street side on the lower left front corner.
5.Have an inverted V -chevron pattern placed across the entire rear of the attenuator and composed of alternating 4 -inch-wide, nonreflec tive black stripes and 4 -inch-wide, yellow retroreflective stripes sloping at 45 degrees .
12-3.23B(3) Trucks
Each truck must comply with:
1.Veh Code Div 12 SECTION 1 2 TEMPORARY TRAFFIC CONTROL
2.Vehicle weight limits as shown in the Authorized Materials List for highway safety features an d the impact attenuator manufacturer's instructions except the vehicle weight must be greater than 22,000 pounds when used with a stationary impact attenuator vehicle
3.Impact attenuator manufacturer 's mounting requirements A PCMS used as a flashing arro w sign must comply with the specifications for an arrow board in the California MUTCD .
12-3.23C Construction
12-3.23C(1) General
Secure objects, including equipment, tools, and ballast, on impact attenuator vehicles to prevent their loosening upon impact by an errant vehicle. Do not use a damaged attenuator. Replace any damaged attenuator. Do not place an impact attenuator vehicle within the buffer space. Position the front of the impact attenuator vehicle at a distance upstream from the moving work vehic le as shown in the following table: Impact Attenuator Vehicle Minimum Upstream Placement Posted speed limit (mph) Distance (ft) <45 100 45–55 150 >55 175 Monitor the placement and use of the impact attenuator vehicle on a regular basis and adjust the position to match changing field conditions as construction progresses.
12-3.23C(2) Stationary Impact Attenuator Vehicles
Section 12-3.23C(2) applies if a bid item for stationary impact attenuator vehicles is shown on the Bid Item List. Use a stationary impact attenuator vehicle to protect workers on foot within the work area when the posted speed limit is 55 mph or greater and workers are not protected by a longitudinal barrier system. Place the stationary impact attenuator vehicle between the longitudinal buffer space and the work area without intruding into the buffer space. Position the front of the stationary impact attenuator vehicle at a distance upstream of the wo rk area as shown in the following table: Impact Attenuator Vehicle Placement Posted speed limit (mph) Distance (ft) <45 75 45–55 100 >55 150 Place the transmission in park and set the parking brake or follow the impact attenuator manufacturer's instructions.
12-3.23D Payment
Stationary impact attenuator vehicle will be measured by 1-day of operation counting as 1 measure unit. A day is defined as 24 consecutive hours beginning at the start of the work shift and includes relocation of the stationary impact attenuator .
12-3.24 12-3.29 Reserved
12-3.30 Flashing Arrow Signs
12-3.30A General
Section 12 -3.30 includes specifications for placing flashing arrow signs. SECTION 1 2 TEMPORARY TRAFFIC CONTROL
12-3.30B Materials
A flashing arrow sign must comply with t he requirements shown in the following table: Flashing Arrow Sign Requirements Type Panel size (min, in) Number of panel lights (min) Legibility distancea (min, mi) I 48 x 96 15 1 II 36 x 72 13 3/4 aThe legibility distance is the distance that a flashing arrow sign must be legible at noon on a cloudless day and during the hours of darkness by persons with 20/20 vision or vision corrected to 20/20. A flashing arrow sign must be finished with commercial -quality nonreflective black enamel and must be equipped with yellow or amber lamps that form arrows or arrowheads. Each lamp must be equipped with a visor and the lamps must be controlled by an electronic circuit that provides from 30 to 45 complete operating cycles per minute for each of the displa ys and modes specified. The control must be capable of dimming the lamps by reducing the voltage to 50 ± 5 percent for nighttime use. Type I signs must have both manual and automatic photoelectric -dimming controls. Dimming in both modes must be continuousl y variable over the entire dimming range. A flashing arrow sign must be capable of operating in the following display modes:
1.Pass left display
2.Pass right display
3.Simultaneous display
4.Caution display or alternating diamond A flashing arrow sign must be capable of operating in the flashing arrow mode or the sequential mode. In the flashing arrow mode, all lamps forming the arrowhead and shaft must flash on and off simultaneously. In the sequential mode, either arrowheads or arrows must flash sequ entially in the direction indicated. In the simultaneous display mode, the lamps forming both the right and left arrowheads and the lamps forming the arrow shaft or center 3 lamps for Type I signs must flash simultaneously. For Type II signs, the lamps for ming the right and left arrowhead, but not the center lamp, may be illuminated continuously; the lamps forming the shaft and the center lamp of the arrowheads must flash on and off simultaneously. In the caution display mode, a combination of lamps not res embling any other display or mode must flash. Each flashing arrow sign must be:
1.Mounted on a truck or trailer
2.Capable of operating when the vehicle is moving
3.Capable of being placed and maintained in operation at locations described A Type II flashing arrow sign must be controllable by the operator of the vehicle while the vehicle is in motion. The bottom of the flashing arrow sign must be a minimum of 7 feet above the roadway when mounted. The trailer for a flashing arrow sign must be equipped with (1) devices to level and plumb the sign and (2) a supply of electrical energy capable of operating the sign.
12-3.30C Construction
Not Used
12-3.30D Payment
Not Used SECTION 1 2 TEMPORARY TRAFFIC CONTROL
12-3.31 Portable Flashing Beacons
12-3.31A General
Section 12 -3.31 includes spec ifications for placing , maintaining , and removing portable flashing beacons.
12-3.31B Materials
Each portable flashing beacon must have:
1.Standard and base
2.Signal section
3.Flasher unit
4.Battery power source The components must be assembled to form a complete, self -contained, portable flashing beacon that can be delivered to the job site and placed into immediate operation. The portable flashing beacon must be weatherproof and operate a minimum of 150 hours between battery rechargin g and routine maintenance. The signal section must be yellow and comply with sec tion 86 -1.02R(4)( b), except it must be rated for 25 W at 12 V. The flash rate for the flashing unit must comply with chapter 4L, "Flashing Beacons," of the California MUTCD . The standard must be adjustable to allow variable mounting of the signal section from 6 to 10 feet, from the bottom of the base to the center of the lens, and be capable of being secured at the desired height. The standard must be securely attached to the ba se and have a length of multiconductor, neoprene - jacketed cable long enough for the full vertical height. The base must be (1) large enough to accommodate at least two 12 V automotive -type storage batteries and (2) a shape and weight such that the beacon w ill not roll if struck by a vehicle or pushed over.
12-3.31C Construction
Remove portable flashing beacons from the traveled way at the end of each night's work. You may store the flashing beacon at selected central locations within the highway where desi gnated by the Engineer. Moving portable flashing beacons from location to location if ordered after initial placement is change order work.
12-3.31D Payment
The payment quantity for portable flashing beacon s (ea) is the number of portable flashing beacon locations with each location counting as 1 measurement unit.
12-3.32 Portable Changeable Message Signs
12-3.32A General
12-3.32A(1) Summary
Section 12 -3.32A includes specifications for placing, maintaining , and removing portable changeable messag e signs.
12-3.32A(2) Definitions
Reserved
12-3.32A(3) Submittals
If requested, submit a certificate of compliance for each PCMS. Submit your cell phone number before starting the first activity that requires a PCMS.
12-3.32A(4) Quality Assurance
Reserve d SECTION 1 2 TEMPORARY TRAFFIC CONTROL
12-3.32B Materials
Each PCMS consists of a sign panel, a controller unit, a power supply, and a structural support system. The PCMS must:
1.Be assembled to form a complete self -contained unit that can be delivered to the job site and placed into immedi ate operation .
2.Operate at an ambient air temperature from -4 to 158 degrees F .
3.Not be affected by mobile radio transmissions other than those required to control the PCMS .
4.Be capable of displaying a 3 -line message with at least 7 characters per li ne.
5.Provide a complete alphanumeric selection .
6.Be internally or externally illuminated during the hours of darkness, when non -illuminated pixels are used .
7.Have a dimming control that automatically adjusts the character light intensity to provide o ptimum character visibility and legibility under all ambient lighting conditions. The dimming control must have a minimum 3 manual dimming modes of different intensities . A message with 18 -inch high characters or 12 -inch high characters must be visible fr om a distance of 1,500 feet and legible from a distance of at least 750 feet at noon on a cloudless day and during the night by persons with 20/20 vision or vision corrected to 20/20. A message with 10 -inch high characters must be legible from a distance of at least 650 feet at noon on a cloudless day and during the night by persons with 20/20 vision or vision corrected to 20/20 . The controller must:
1.Be an all solid -state unit .
2.Include at least 5 preprogrammed messages .
3.Have a user adjust able display rate .
4.Have a user adjustable flashing -off time .
5.Include a screen to review the messages before being displayed on the sign .
6.Include a keyboard message entry system. The keyboard must be equipped with a security lockout feature .
7.Have nonvolatile memory to store an infinite number of user created messages .
8.Be installed at a location that allows the user to perform all the functions from a single position .
12-3.32C Construction
Use a PCMS with characters:
1.At least 18 inches in height where the useable shoulder area is 15 feet wide or more
2.At least 12 inches in height where the useable shoulder area is less than 15 feet wide
3.At least 10 inches in height if the PCMS is: 3.1. Mounted on a service patrol truck or incident resp onse vehicle 3.2. Used for traffic control where the posted speed limit is less than 40 mph Place a PCMS as far from the traveled way as practicable where it is legible to approaching traffic without encroaching on the traveled way. Where the vertical roa dway curvature restricts the sight distance of approaching traffic, place the sign on or before the crest of the curvature where it is most visible to the approaching traffic. Where the horizontal roadway curvature restricts the sight distance of approachi ng traffic, place the sign at or before the curve where it is most visible to approaching traffic. Where practicable, place the sign behind guardrail or temporary barrier system . If multiple signs are needed, place each sign on the same side of the road at least 1,000 feet apart on freeways and expressways and at least 500 feet apart on other types of highways. Operate the PCMS under the manufacturer's instructions. Activate the security lockout feature at all times. When in operation, place the bottom of a PCMS at least 7 feet above the roadway in areas where pedestrians are anticipated and 5 feet above the roadway elsewhere. Place the top of the PCMS no more than 14.5 feet above the roadway. SECTION 1 2 TEMPORARY TRAFFIC CONTROL If more than one PCMS is simultaneously visible to traffic, only one sign may display a sequential message at any time. Do not use dynamic message displays, such as animation, rapid flashing, dissolving, exploding, scrolling, horizontal movement, or vertical movement of messages. The message must be centered within each line of the display. You may use an additional PCMS if more than 2 phases are needed to display a message. Display only messages shown or ordered. Repeat the entire message continuously in not more than 2 phases of at least 3 seconds per phase. The sum of the display times for both of the phases must be a maximum of 8 seconds. If more than 2 phases are needed to display a message, use an additional PCMS. You must be available by cell phone during activities that require a sign. Be prepared to immediately change the displayed message if ordered. You may operate the sign with a 24 -hour timer control or remote control if authorized. Keep the PCMS clean to provide maximum visibility. After the initial placement, move a sign from location to locatio n as ordered.
12-3.32D Payment
Not Used
12-3.33 Portable Signal Systems
12-3.33A General
12-3.33A(1) Summary
Section 12 -3.33 includes specifications for installing, maintaining, and removing portable signal systems. A portable signal system includes:
1.Portable signals
2.Portable lighting
3.Portable flashing beacons The components of a portable signal system are shown.
12-3.33A(2) Definitions
Reserved
12-3.33A(3) Submittals
Submit a certificate of compliance for each portable signal system. Submit a 24-hour contact phone number before starting the activity that requires the portable signal system .
12-3.33A(4) Quality Assurance
Assign an on -site portable signal system coordinator. The coordinator must be available to service, maintain, adjust timing parameters, and relocate system components as necessary. The coordinator must be accessible 24 hours a day while the system is in operation . Replace or re pair damaged or malfunctioning portable signal system units within 12 hours of notification of a system failure .
12-3.33B Materials
The portable signal system must:
1.Comply with Part 4 of the California MUTCD
2.Be a complete system that can be delivered to the job site and placed into immediate operation
3.Withstand a minimum 90-mph wind speed under AASHTO (2001) Standard Specification for Highway Signs, Luminaires and Traffic Signals
4.Have a minimum one -mile communication range between portable signals, not line of sight SECTION 1 2 TEMPORARY TRAFFIC CONTROL
5.Provide local and remote system control, monitoring, and diagnostics through a dedicated controller
6.Prevent unauthorized users or electronic devices from gaining acce ss to the portable signal system using an industry authentication and encryption standard level of security
7.Operate in either fixed time, traffic actuated , or manual mode
8.Operate at an ambient air temperature from -40 to 130 degrees F
9.Have secured wireless communication between the portable signal
10.Have a fail -safe device that monitors for malfunctions and prevents the system from displaying conflicting indications
11.Display a steady red indication in all signal heads when a conflict or communication failure is detected
12.Continuously monitor and automatically send email or text alerts to designated personnel for: 12.1. Signal malfunctions 12.2. Conflicting indications 12.3. Communication failures between signal units 12.4. Power, volt age, and battery low levels
13.Use radar or video detection A trailer must:
1.Be equipped with stabilizing and leveling devices
2.Be less than 7 feet wide A portable signal consists:
1.Two or more s ignal heads .
2.Adjustable overhead m ast arm . The ma st arm must have a minimum 8 feet separation between signal heads center to center.
3.Adjustable shaft .
4.Controller unit .
5.Communication device.
6.Redundant conflict monitoring device.
7.Primary and back -up power sources. Portable signals must:
1.Be self -contained and trailer mounted
2.Be programmable as primary or secondary devices
3.Automatically switch between the primary and the back -up power source in the event of a power failure The signal heads must :
1.Comply with section 86-1.02R
2.Have 12 -inch signal sections
3.Be arranged vertically
4.Be mounted one on the shaft and one on the mast arm The controller unit must:
1.Be an all -solid-state unit
2.Have user adjustable timing parameters for each direction of travel, inclu ding bicycles and pedestrians
3.Include a minimum 7-inch LCD color graphic touch screen to review the timing parameters
4.Include a timing entry device equipped with a security lockout feature
5.Have nonvolatile memory to store a library of user created traffic control scenarios Wireless communication devices must b e FCC approved Part 15 certified . The portable signal system must operate on a continuous, 24 -hour basis and must operate for a minimum 10 days when the primary power fails. Portable lighting must: SECTION 1 2 TEMPORARY TRAFFIC CONTROL
1.Comply with 8 CA Regs § 1523
2.Be provided at each portable signal
3.Be controlled using a photoelectric unit
4.Be part of the signal unit or on a separate trailer
12-3.33C Construction
Provide a portable signal system for reversible traffic control . Notify the Engineer at least 7 days prior to the use of the portable signal system. The traffic operations office from the district in which the work is located will provide the timing parameters. Place the signal unit trailer as far from the traveled way as practicable where it is visible to approaching traffic without encroaching on to the traveled way. Position signal heads and any attachments mounted on the mast arm over the road surface from 17 to 19 feet from the bottom of t he signal head to the top of the road surface. Position signal heads mounted on the trailer at a minimum height of 10 feet but not more than 19 feet from the bottom of the signal head to the top of the ground surface. Operate the portable signal system under the manufacturer's instructions . Have a qualified vendor representative on site during the initial set up. The portable signal system coordinator must enter the initial timing parameters and adjust the timing parameters as needed. Activate the security lockout feature at all times. Program portable signals to display a steady red indication in all signal heads upon startup. Keep signal heads clean to provide maximum visibility. If the portable signal system operation fails, provide flaggers to control traffic until the system is back in operation.
12-3.33D Payment
Not Used
12-3.34 Temporary Flashing Beacon Systems
12-3.34A General
Section 12 -3.34 includes specifications for installing, maintaining, and removing temporary flashing beacon systems. A temporary flashing beacon system must comply with section 87 -20.
12-3.34B Materials
The sign panels installed on a temporary flashing beacon system must comply with section 12 -3.11.
12-3.34C Construction
Not Used
12-3.34D Pay ment
Not Used
12-3.35 Automated Work Zone Information Systems
12-3.35A General
12-3.35A(1) Summary
Section 12 -3.35 includes specifications for installing automated work zone information systems. SECTION 1 2 TEMPORARY TRAFFIC CONTROL
12-3.35A(2) Definitions
Reserved
12-3.35A(3) Submittals
Reserved
12-3.35A(4) Quality Assurance
Assign an on -site system coordinator. The coordinator must be available locally to service, maintain, and relocate system components as necessary. The coordinator must be accessible 24 –7 while the system i s deployed. If the system fails to perform as specified, perform any necessary remedial work and replace any failed components within 24 hours of notification of a system or component failure.
12-3.35B Materials
12-3.35B(1) General
The AWIS must be a pro ven system that has been successfully deployed and operated in actual work zones or congested areas. The system must acquire traffic data throughout the work zone and automatically display predetermined information to motorists without operator interventio n after system initialization. Real-time information must be displayed to motorists using a PCMS. The sign must comply with section
12-3 32.
The system must be controlled either locally or remotely by a dedicated controller or computer. Authorized users mu st be able to both locally and remotely override motorist information messages. Traffic sensors must not require adjustments after the initial deployment.
12-3.35B(2) General System Function Requirements
The general system functions of the AWIS must be ca pable of:
1.Preventing any unauthorized users or systems from gaining access to the PCMS s through an industry authentication and encryption standard level of security.
2.Providing current operational status locally and remotely. Operational status must i nclude current traffic data and messages, communications system, and power status.
3.Delivering notifications either by telephone, voice, or text messages to alert support staff of trouble conditions.
4.Generating trouble alerts for conditions such as (1 ) low roadside equipment power or voltage, (2) system communications failure, (3) low speed traffic detected, and (4) excessive delay detected.
5.Adjusting the thresholds of reduced speed and congestion -induced delay at which the system initiates a troubl e alert.
6.Allowing programming of the hours during which the trouble condition alerting subsystem initiates notification to authorized users.
7.Measuring periodically and automatically the power levels of all equipment. Alert support staff, locally and remotely via a telephone message, in time to provide supplemental power before the system ceases to operate.
8.Displaying preprogrammed messages based on the time of day and day of week.
12-3.35B(3) Motorist Information Message Requirements
The AWIS must be capable of:
1.Displaying predetermined speed, delay, diversion, and closure messages to motorists when user - adjustable thresholds are exceeded.
2.Updating its speed and delay advisory messages at least once per minute. The actual message updates must be consistent with traffic conditions.
3.Selecting messages for each PCMS independently, based on the traffic conditions downstream of the sign.
4.Recording motorist information messages in a comma -separated values file with time and date stamps, including message overrides with user ID. SECTION 1 2 TEMPORARY TRAFFIC CONTROL
5.Displaying default messages when traffic conditions, system algorithms, and user parameters do not dictate that an advisory message should be displayed.
6.Displaying separate, independent, default messag es on each PCMS .
7.Analyzing traffic parameters in work zones in which there are multiple speed limits. The following parameters for the selection and presentation of information messages must be adjustable by the user:
1.Message update frequency
2.Minimum delay necessary to trigger a delay advisory message
3.Persistence of delay before a delay message is displayed
4.Level of delay required to trigger a diversion message
5.Change in delay needed to cause a delay advisory message update
6.Change in d ownstream speed at which a speed advisory message update occurs
12-3.35B(4) System Communication Requirements
The wireless communications subsystem of the AWIS must:
1.Operate independently of the public cellular phone system for receiving data to ensur e reliable communications
2.Communicate independent of the line of sight or distance
3.Incorporate an error detection and correction mechanism to ensure the integrity of all traffic condition data and motorist information messages
4.Configure automatica lly during system initialization
12-3.35B(5) Traffic Data Acquisition Requirements
The AWIS must collect accurate traffic data using a speed measurement technique with an accuracy of ±5 mph, allowing specific information messages. The system must collect data during reduced visibility conditions, including precipitation, fog, darkness, excessive dust, and road debris. The system must (1) archive the data with time and date stamps and (2) aggregate the data in operator - definable time increments, accessible 24 –7 to the Engineer in a comma -separated values file.
12-3.35B(6) User Interface
The syste m must have a user interface to control the AWIS PCMS communications. The interface must be (1) software compatible with a Windows environment or (2) a web service accessed by a web browser. Provide any software on a CD or other Engineer -authorized data -storage device for installation at the Department's Transportation Management Center. The user interface must, at a minimum, provide the user with a list of AWIS PCMSs in the field, location information for each AWIS PCMS, and a real -time on -board display of the message in the field. Control options must, at a minimum, provide the user the ability to change the on -board messages and flash rate.
12-3.35C Construction
Obtain authorization for the message content and the threshold used for triggering the messag e before displaying any message on a PCMS. Provide complete setup and support for the AWIS PCMS communications.
12-3.35D Payment
Not Used
12-3.36 Portable Transverse Rumble Strips
Reserved
12-3.37 Portable Radar Speed Feedback Sign Systems
12-3.37A Gen eral
Section 12 -3.37 includes specifications for placing, maintaining, and removing portable radar speed feedback sign systems. SECTION 1 2 TEMPORARY TRAFFIC CONTROL
12-3.37B Materials
A portable radar speed feedback sign system must comply with the requirements for a temporary radar speed fe edback sign system, except it must be trailer mounted.
12-3.37C Construction
Not Used
12-3.37D Payment
Not Used
12-3.38 Automated Flagger Assistance Devices
12-3.38A General
12-3.38A(1) Summary
Section 12-3.38 includes specifications for placing , maintaining, and removing automated flagger assistance device s (AFADs) .
12-3.38A(2) Definitions
automated flagger assistance devices: Devices that enable a flagger to be positioned out of the lane of traffic and are used to control motorists through work zones. They are designed to be remotely operated either by a single flagger at one end of the work zone or at a central location, or by separate flaggers near the devices.
12-3.38A(3) Submittals
Submit a copy of the manufacturer's operating instructions for the automated flagger assistance devices .
12-3.38A(4) Quality Assurance
Reserved
12-3.38B Materials
The automated flagger assistance device must comply with the California MUTCD , Section 6E.04, and Section 6E.06, "Red/Yellow Lens Automated Flagger Assistance Devices." The device must :
1.Be equipped with a gate arm , which must not extend into the opposing lane
2.Alternately display a steadily illuminated circular red lens and a flashing circular yellow lens to control traffic
3.Have a fail -safe device that prevents the operator from inadvertently actuating a simultaneous flashing circular yellow lens at both ends of the work zone
4.Have a device that monitor s for malfunctions and prevent s the display of conflic ting indication
5.Have a 24-by-30-inch R10 -6 STOP HERE ON RED sign mounted o n the trailer The device must continuously monitor the wireless communication links and verify tran smission and reception of data between the devices. If communication is lost, the devices must immediately display the circular red/stop indication and lower the gate arms.
12-3.38C Construction
The devices must:
1.Be placed where a flagger station is shown with an unobstructed view from the operator
2.Be placed outside of the traveled lane
3.Be attended by the operator when in use
4.Have a minimum of 9 cones placed on a taper in advance of the device and along the edge of shoulder or edge of the trave led way at 25 -foot intervals to a point not less than 25 feet past the device
5.Be clearly visible to approaching traffic and illuminated during the hours of darkness If any device unit become s inoperative, do one of the following:
1.Replace the unit wi th the same type and model . SECTION 1 2 TEMPORARY TRAFFIC CONTROL
2.Revert to human flagging operations .
3.Terminate all construction activities requiring the use of the devices. Incorporat e the devices into t he traffic control using one of the following methods:
1.Method 1 : Place one device at each end of the closure .
2.Method 2 : Place one device at one end of the closure and a flagger at the opposite end of the closure . Use t wo operators for both methods, except you may use a single operator if:
1.Operator has an unobstructed view of the devices
2.Operator has an unobstructed view of approaching traffic in both directions
3.Second flagger is on-site to assist with manual flagging should the device malfunction , or to direct traffic when drivers fail to comply with the devices When AFADs are in operation :
1.Use portable transverse rumble strips at your discretion
2.Do not use the 48 -inch-by-48-inch C9A (CA) sign
3.Do not use the gate cones
12-3.38D Payment
If automated flagg er assistance devices bid item is not shown on the Bid Item List, providing AFADS is change order work .
12-3.39 Temporary Radar Speed Feedback Sign Systems
12-3.39A General
Section 12 -3.39 includes specifications for placing, maintaining, and removing temporary radar speed feedback sign systems.
12-3.39B Materials
A temporary radar speed feedback sign system must comply with the requirements under section 87 -20.
12-3.39C Construction
Place the system :
1.As far from the traveled way as practicable where it is visible and legible to approaching traffic. Where practicable, place the sign behind a barrier or guardrail.
2.At or before the crest of roadway vertical curvatures that restrict sight distance.
3.At or before the curve of horizontal roadway curvatures that restrict sight distance. Install a G20 -5aP WORK ZONE plaque.
12-3.39D Payment
Not Used
12-3.40 Variable Speed Limit Sign System
12-3.40A General
12-3.40A(1) Summary
Section 12 -3.40 includes specifications for placing , maintaining, and removing variable speed limit sign systems.
12-3.40A(2) Definitions
Reserved
12-3.40A(3) Submittals
Submit a s an informational submittal a weekly variable s peed limit sign system log report by Tuesday of the following week. SECTION 1 2 TEMPORARY TRAFFIC CONTROL
12-3.40A(4) Quality Assurance
Reserved
12-3.40B Materials
12-3.40B(1) General
A variable s peed limit sign system consists of :
1.Signs
2.Two flashing beacons
3.Power source The variable speed limit sign system must :
1.Display the speed limit characters without animation.
2.Automatically adjust the digital display intensity to provide optimum character visibility and legibility under all ambient lighting conditions using a photocell.
3.Create and maintain an electronic log report of the local and remote activities and system failures. The report must include: 3.1. Date and time 3.2. Location description, county, route, direction, post mile or station, and GPS position 3.3. Speeds shown on the digital display 3.4. ON or OFF status of f lashing beacon s 3.5. System failure description including: 3.5.1. Cause of failure 3.5.2. List of equipment that failed 3.5.3. Work performed to correct the failure 3.5.4. Duration of failure 3.6. Name and unique user ID for user operating o r repairing the system
4.Include local and remote control of digital display legend and flashing beacons.
5.Have a scheduling feature to allow for local or remote pre -programming of the digital display legend and flashing beacons at specific times and da tes.
6.Send a real -time text or email message to the designated personnel for the following types of alerts: 6.1. Equipment alerts including low power, loss of power, and loss of communication 6.2. Traffic alerts including flashing beacons ON or Off activ ations and digital display legend changes Signs must comply with section 82 -2. The variable speed limit sign includes a digital display as part of the R2-1 sign . The R2 -1 sign must be:
1.48 by 60 inches for freeways and expressways
2.36 by 48 inches for conventional highways The variable speed limit sign systems must include a G20 -5aP sign above the R2 -1 sign. The G20 -5aP sign must have characters:
1.8 inches in height for freeways and expressways
2.6 inches in height for conventional highways The di gital display must :
1.Be LED white legend on a black background.
2.Have two numerical characters . Each character must be : 2.1. Based on a minimum 5 x 7 character ratio 2.2. At least 18 inches in height for freeways and expressways 2.3. At least 14 inches in height for conventional highways
3.Have a minimum 30 degrees cone of visibility, ±15 degrees from the centerline. The flashing beacons must :
1.Be yellow and comply with section 86 -1.02R(4), except they may be rated for 12 V . SECTION 1 2 TEMPORARY TRAFFIC CONTROL
2.Operate i n the alternating flashing mode. The flash rate for the flashing unit must comply with chapter 4L, "Flashing Beacons," of the California MUTCD .
3.Be securely mounted to assembly.
4.Be positioned vertically, one at a distance no more than 12 inches above the ed ge of the top sign and one at a distance no more than 12 inches below the edge of the bottom sign. The power source must be either a generator or photovoltaic system and must include batteries to maintain the system's communication and operation for 10 co ntinuous days without external power or recharge.
12-3.40B(2) Portable Variable Speed Limit Sign Systems
A portable variable speed limit sign system must be trailer mounted .
12-3.40B(3) Temporary Variable Speed Limit Sign Systems
A temporary variable speed limit sign system must be post mounted under section 82 -3.
12-3.40C Construction
Place the variable s peed limit sign system :
1.As far from the traveled way as practicable where it is visible and legible to approaching traffic. Where practicable, place the sign behind a barrier or guardrail.
2.At or before the crest of roadway vertical curvatures that restrict sight distance.
3.At or before the curve of horizontal roadway curvatures that restrict sight distance.
4.With t he bottom of the R2 -1 sign a minimum of 7 feet above the roadway. Delineate trailers with a taper consisting of 9 traffic cones placed 25 feet apart except whe n placed behind a barrier . Set up and level the portable system . Activate t he flashing beacons and set the digital display to the reduced speed limit only when workers are present within the construction work zone and no more than 15 minutes before workers arrive in the work zone . Do not display unauthorized speed limits. Deactivate the flashing bea cons and change the digital display to the original posted speed limit no later than 15 minutes after workers depart the work zone.
12-3.40D Payment
Not Used
12-3.41 Temporary Automated End of Queue Warning Systems
12-3.41A General
12-3.41A(1) Summary
Section 12 -3.41 includes specifications for furnishing, maintaining, and removing temporary automated end of queue warning systems. A temporary automated end of queue warning system (Type 1) is used when the traffic queue length is 3.5 miles or less. Do no t use if there is no queue. A temporary automated end of queue warning system (Type 2) is used when the traffic queue length is 7.5 miles or less. Do not use if there is no queue.
12-3.41A(2) Definitions
Reserv ed
12-3.41A(3) Submittals
Submit a 24 -hour c ontact phone number for the on -site temporary automated end of queue warning system coordinator before starting the activity that requires the system. Submit a weekly temporary automated end of queue warning system operation report by Tuesday of the follow ing week. The report must include:
1.Date, time, message, county, route, post mile or station and direction for each PCMS. SECTION 1 2 TEMPORARY TRAFFIC CONTROL
2.Date and time when the system is not operational.
3.Date, time, and activity necessary to maintain system in operation.
4.Date and time for any system failures. Each failure entry must include: 4.1. Description of the equipment that failed. 4.2. Cause of equipment malfunction. 4.3. Description of the work performed to correct the malfunction. 4.4. Time required to repair the malfunction.
12-3.41A(4) Quality Assurance
Assign an on -site temporary automated end of queue warning system coordinator. When the system is required to be in operation, the coordinator must be available to repair or replace a damaged or malfunctioning system within 2 hours of notification of a system failure.
12-3.41B Materials
12-3.41B(1) General
Temporary automated end of queue warning system must differentiate between periods of stopped traffic and periods with no traffic. Temporary automated end of queue warning system must comply with the requirements for an automated work zone information system, except the system must display on the PCMS:
1.Messages shown, based on real time traffic speed data
2.Default message ROAD WORK AHEAD when any of the following conditions exist: 2.1. Sensors do not detect a queue 2.2. During a power failure and the controller must restart automatically 2.3. When communication is lost for more than 10 minutes
3.Message STOPPED TRAFFIC AHEAD when the speed drops below 5 mph and the traffic sensors stop detecting
12-3.41B(2) Temporary Automated End of Queue Warning Systems (Type 1)
The temporary automated end of queue warning system (Type 1) consists of a controller, a minimum 4 traffic sensors and a minim um 1 PCMS.
12-3.41B(3) Temporary Automated End of Queue Warning Systems (Type 2)
The temporary automated end of queue warning system (Type 2) consists of a controller, a minimum 8 traffic sensors and a minimum 2 PCMS.
12-3.41C Construction
12-3.41C(1) G eneral
Place the temporary automated end of queue warning system as shown. On entrance ramps within the area covered by the temporary automated end of queue warning system, place a W3 -4 (BE PREPARED TO STOP) sign downstream from the C23 (CA) (ROAD WORK AHE AD) sign. Placing a C23 (CA) (ROAD WORK AHEAD) sign on the ramp is change order work, if one is not already in place. Operate the temporary automated end of queue warning system only while work is in progress or as described.
12-3.41D Payment
If the tempo rary automated end of queue warning system malfunctions for a cumulative period of 4 hours or more, no payment will be made for the day.
12-3.42 Pickup Truck Mounted Changeable Message Sign
12-3.42A General
12-3.42A(1) Summary
Section 12 -3.42 includes specifications for placing, operating, maintaining, and removing pickup truck mounted changeable message sign (PTMCMS). SECTION 1 2 TEMPORARY TRAFFIC CONTROL
12-3.42A(2) Definitions
Reserved
12-3.42A(3) Submittals
Reserved
12-3.42A(4) Quality Assurance
Reserved
12-3.42B Materials
A PTMCMS consists of a PCMS mounted on a supporting structure affixed to a pickup truck under the PCMS manufacture's recommendations. A PTMCMS includes:
1.PCMS with characters at least 12 inches in height
2.Pickup truck with a gross vehic le weight rating of at least 5,000 pounds
3.Two-way communication system
4.Rotating or flashing amber light
5.Public address system with external speaker
6.54-by-24-inch SC15 (CA) (CAUTION) sign attached to the tailgate
12-3.42C Construction
Provide one operator per PTMCMS.
12-3.42D Payment
Not Used
12-4 Maintaining Traffic
12-4.01 General
12-4.01A General
Section 12 -4.01 includes general specifications for maintaining traffic through construction work zones. If local authorities regulate traffic, notify them at least 5 business days before the start of job site activities. Cooperate with the local authorities to handle traffic through the work zone and to make arrangements to keep the work zone clear of parked vehicles.
12-4.01B Materials
Not Used
12-4.01C Construction
Not Used
12-4.01D Payment
Not Used
12-4.02 Traffic Control Systems
12-4.02A General
12-4.02A(1) Summary
Section 12 -4.02 includes specifications for providing a traffic control system to close traffic lanes, shoulders, r amps, and connectors. A traffic control system for a closure includes flagging and the temporary traffic control devices described as part of the traffic control system. Temporary traffic control devices must comply with section 12 -3.
12-4.02A(2) Definitions
Construction Zone Enhanced Enforcement Program (C OZEEP): Program that provides California Highway Patrol officers to monitor the movement of traffic within the work zone. SECTION 1 2 TEMPORARY TRAFFIC CONTROL buffer lane: Closed lane that separates a lane carrying traf fic from the work area to enhance safety of workers and allow errant vehicles to recover safely. designated holidays: Designated holidays are shown in the following table: Designated Holidays Holiday Date observed New Year's Day January 1st Washington's Birthday 3rd Monday in February Memorial Day Last Monday in May Independence Day July 4th Labor Day 1st Monday in September Veterans Day November 11th Thanksgiving Day 4th Thursday in November Christmas Day December 25th If a designated holiday falls on a Sunday, the following Monday is a designated holiday. If November 11th falls on a Saturday, the preceding Friday is a designated holiday.
12-4.02A(3) Submittals
12-4.02A(3)(a) General
Submit a request for a minor deviation f rom the specified work hours. For a project in District 7, submit the request at least 15 days before the proposed closure date. Your request may be authorized if (1) the Department does not accrue a significant cost increase and (2) the work can be expedi ted and better serve the traffic. If a closure is not opened to traffic by the specified time, submit a work plan that ensures that future closures will be opened to traffic by the specified time. Allow 2 business days for review. Submit closure schedule r equests and closure schedule amendments using LCS to show the locations and times of the requested closures. Submit a traffic break request using LCS to show the location and time of the requested traffic break.
12-4.02A(3)(b) Closure Schedules
Every Mond ay by noon, submit a closure schedule request for planned closures for the next week. Except for a project in District 7, the next week is defined as Sunday at noon through the following Sunday at noon. For a project in District 7, the next week is defined as Friday at noon through the following Friday at noon. Submit a closure schedule request from 25 days to 125 days before the anticipated start of any job site activity that reduces:
1.Horizontal clearances of traveled ways, including shoulders, to 2 lanes or fewer due to activities such as temporary barrier placement and paving
2.Vertical clearances of traveled ways, including shoulders, due to activities such as pavement overlays, overhead sign installation, or falsework girder erect ion Submit closure schedule changes, including additional closures, by noon at least 3 business days before a planned closure. Cancel closure requests using LCS at least 48 hours before the start time of the closure. The Department notifies you through LC S of authorized and unauthorized closures and closures that require coordination with other parties as a condition for authorization.
12-4.02A(3)(c) Contingency Plans for Closures
Submit a contingency plan for an activity that could affect a closure if a contingency plan is specified in the special provisions or if a contingency plan is requested. SECTION 1 2 TEMPORARY TRAFFIC CONTROL If a contingency plan is requested, submit the contingency plan within 1 business day of the request. The contingency plan must identify the activities, equipmen t, processes, and materials that may cause a delay in the opening of a closure to traffic. The plan must include:
1.List of additional or alternate equipment, materials, or workers necessary to ensure continuing activities and on -time opening of closures if a problem occurs. If the additional or alternate equipment, materials, or workers are not on the job site, specify their location, the method for mobilizing these items, and the required time to complete mobilization.
2.General time -scaled logic diagra m displaying the major activities and sequence of the planned activities. For each activity, identify the critical event that will activate the contingency plan. Submit revisions to a contingency plan at least 3 business days before starting the activity requiring the contingency plan. Allow 2 business days for review.
12-4.02A(3)(d) Traffic Break Schedule
Every Monday by noon, submit a traffic break request for the next week. Support for a traffic break is based on local California Highway Patrol staffin g levels and may not be available for the date or time requested. Traffic break requests are limited to the hours when a shoulder or lane closure is allowed. Cancel a traffic break request using LCS at least 48 hours before the start time of the traffic br eak. The Department notifies you through LCS of authorized and unauthorized traffic breaks. The Department does not adjust time or payment if (1) a California Highway Patrol officer is unavailable for the requested date or time or (2) your request is not a uthorized.
12-4.02A(4) Quality Assurance
Reserved
12-4.02B Materials
Not Used
12-4.02C Construction
12-4.02C(1) General
Work that interferes with traffic is limited to the hours when closures are allowed. Do not reduce an open traffic lane width to less than 10 feet. If traffic cones or delineators are used for temporary edge delineation, the side of the base of the cones or delineators nearest to traffic is considered the edge of the traveled way. Do not simultaneously close consecutive ramps in the same direction of travel servicing 2 consecutive local streets unless authorized. Notify the Engineer of delays in your activities caused by the denial of either (1) an authorized closure or
2.a closure schedule request for the specified time frame allo wed for closures. Discuss the contingency plan for any activity that could affect the closure schedule with the Engineer at least 5 business days before starting the activity requiring the plan. If you do not open a closure to traffic by the specified time , suspend work and submit a work plan. No further closures are allowed until your work plan has been authorized. If the Engineer orders you to remove a closure before the time designated in the authorized closure schedule, any delay caused by this order is an excusable delay. The Engineer may reschedule a closure that was canceled due to unsuitable weather. You may use automated flagger assistance device s to enhance the traffic control system for a lane closure on a two-lane convention highway , except if a bid item for a utomated flagger assistance device s is shown in the Bid Item List, the use of AFADs is required. SECTION 1 2 TEMPORARY TRAFFIC CONTROL Do not use automated flagger assistance devices:
1.On multi -lane highways
2.As a substitute or a replacement for a temporary traffic control signal
3.If the devices impair access for pedestrians and bicycles , unless alternate access is provided
4.If the usable shoulder area is not wide enough to place a trailer mounted device
5.If the d istance between the device s is more than 800 feet , except when each device is controlled by a separate operator and radio communication is available between the AFAD operators
12-4.02C(2) Lane Closure System
12-4.02C(2) (a) General
The Department provides LCS training. Request the LCS training at least 30 days before submitting the 1st closure request. The Department provides the training within 15 days after your request. LCS training is web -based or held at a time and location agreed upon by you and the Engineer. For web - based training, the Engineer provides you the website address to access the training. Within 5 business days after completion of the training, the Department provides LCS accounts and user IDs to your a ssigned, trained representatives. Each representative must maintain a unique password and current user information in the LCS. The project is not accessible in LCS after Contract acceptance.
12-4.02C(2)(b) Status Updates for Authorized Closures
Update the status of authorized closures using the LCS Mobile web page. For a stationary closure on a traffic lane, use code:
1.10-97 immediately before you place the 1st cone on the traffic lane
2.10-98 immediately after you remove all of the cones from the traffic lane For a stationary closure on the shoulder , use code:
1.10-97 immediately before you place the 1st cone after the last advance warning sign
2.10-98 immediately after you remove the last cone before the advance warning sign s For a moving closure, use code:
1.10-97 immediately before the actual start time of the closure
2.10-98 immediately after the actual end time of the closure For closures not needed on the authorized date , use code 10 -22 within 2 hours after the authorized start time. If you are unable to access the LCS Mobile web page, immediately notify the Engineer of the closure's status.
12-4.02C(3) Closure Requirements and Charts
12-4.02C(3)(a) General
Where two or more lanes in the same direction of travel and on the same side are adjacent to the work area, closures must comply with the buffer lane requirements.
12-4.02C(3)(b) Complete Freeway or Expressway Closure Requirements
Reserved
12-4.02C(3)(c) HOV, Express, and Bus Lane Closure Requirements
Reserved
12-4.02C(3)(d) City Street Closure Requirements
Reserved SECTION 1 2 TEMPORARY TRAFFIC CONTROL
12-4.02C(3)(e) Closure Restrictions for Special Events and Venues
Reserved
12-4.02C(3)(f) Closure Restrictions for Designated Holidays and Special Days
Rese rved
12-4.02C(3)(g) Freeway or Expressway Lane Requirement Charts
Reserved
12-4.02C(3)(h) Complete Freeway or Expressway Closure Hour Charts
Reserved
12-4.02C(3)(i) Complete Connector Closure Hour Charts and Connector Lane Requirement Charts
Reserved
12-4.02C(3)(j) Complete Ramp Closure Hour Charts and Ramp Lane Requirement Charts
Reserved
12-4.02C(3)(k) Conventional Highway Lane Requirement Charts
Reserved
12-4.02C(3)(l) Complete Conventional Highway Closure Hour Charts
Reserved
12-4.02C(3)(m) City Street Closure Hour Charts and City Street Lane Requirement Charts
Reserved
12-4.02C(3)(n) Concrete Slab and Approach Slab Replacement Closure Hours Table
Reserved
12-4.02C(3)(o) 12-4.02C(3)(s) Reserved
12-4.02C(4) Buffer Lanes
Where two or m ore lanes are adjacent to a work area, including work on shoulders, you must close the lane adjacent to the work area in accordance with the lane requirement charts as follows:
1.Work is on the traveled way within 6 feet of the adjacent traffic lane.
2.Work is off the traveled way but within 6 feet of the edge of the traveled way , and the posted speed is 45 mph or greater.
3.Work is off the traveled way but within 3 feet of the edge of the traveled way, and the posted speed is less than 45 mph. Closure of the adjacent traffic lane is not required for:
1.Workers protected by a permanent or temporary barrier
2.Installation, maintenance, or removal of traffic control devices except for temporary barrier system For time periods at the beginning or end of work when the lane requirement charts do not allow the closure of the adjacent traffic lane, the following construction activities are allowed without a buffer lane:
1.Paving
2.Parking, positioning, loading, unloading vehicles, or storing equipment or materials necessary for the work being performed
3.Placing, removing or maintaining traffic stripes, pavement marking, or pavement markers
4.Operations not performed by workers on foot such as grinding, grooving, planing, sweeping, applying a tack coat, or operating a crane
5.Operations where workers on foot are protected, at each work location, within the same closure by an impact attenuator vehicle in the lane adjacent to live traffic Do not perform work activities or store equipment, veh icles, or materials within the buffer lane. SECTION 1 2 TEMPORARY TRAFFIC CONTROL
12-4.02C(5) 12.4.02C(6) Reserved
12-4.02C(7) Traffic Control System Requirements
12-4.02C(7)(a) General
Control traffic using stationary closures. If components of the traffic control system are displaced or c ease to operate or function as specified, immediately repair them to their original condition or replace them and place them back in their original locations. Do not start activities that require an impact attenuator vehicle until the attenuator is in plac e. Each vehicle used to place, maintain, and remove components of a traffic control system on a multilane highway must have a Type II flashing arrow sign that must operate whenever the vehicle is used for placing, maintaining, or removing the components. F or a stationary closure, vehicles with a Type II flashing arrow sign not involved in placing, maintaining, or removing the components must display only the caution display mode. If a flashing arrow sign is required for a closure, activate the sign before t he closure is in place.
12-4.02C(7)(b) Stationary Closures
Except for channelizing devices placed along open trenches or excavations adjacent to the traveled way, remove the components of the traffic control system for a stationary closure from the travel ed way and shoulders at the end of each work period. You may store the components at authorized locations within the limits of the highway. If a traffic lane is closed with channelizing devices for excavation work, move the devices to the adjacent edge of the traveled way when not excavating. Space the devices as shown for the lane closure. Use a n impact attenuator vehicle to place and remove components of a stationary traffic control system. Do not use an impact attenuator vehicle on two -lane conventional highways if the vehicle would have to stop within a lane open to traffic to place, maintain, or remove the traffic control system.
12-4.02C(7)(c) Moving Closures
For a moving closure, use a PCMS truck mounted on the upstream sign vehicle. The full operati onal height to the bottom of the sign may be less than 7 feet above the ground but must be as high as practicable. If you use a flashing arrow sign in a moving closure, the sign must be truck mounted on the upstream sign vehicle. Operate the flashing arrow sign in the caution display mode if it is being used on a 2 -lane highway. Use a n impact attenuator vehicle as a shadow vehicle.
12-4.02C(7)(d) Traffic Breaks
You may request a traffic break for special operations such as:
1.Installation, removal, or replacement of an overhead power line or other utility cable across the highway
2.Installation or removal of traffic control devices in areas without a standard -width shoulder
3.Transportation of large equipment across the highway
4.Access t o median areas for workers or equipment If the Department authorizes the traffic break, the Engineer notifies you and arranges the traffic break with the California Highway Patrol through COZEEP. The duration of a traffic break must not exceed 5 minutes or as authorized. Two California Highway Patrol officers per vehicle are required for traffic breaks occurring any time from 2200 t o 0600 hours . A minimum of 2 California Highway Patrol vehicles will be assig ned to conduct a traffic break. Place a truck mounted PCMS approximately 2 ,000 feet upstream of the work area or as agreed upon by the Engineer. Monitor the traffic during the traffic break. If a queue develops, reposition the PCMS truck SECTION 1 2 TEMPORARY TRAFFIC CONTROL far enough upstream of the traffic break to provide real -time notification to motorists before they approach the traffic queue.
12-4.02C(8) Traffic Control System Signs
12-4.02C(8)(a) General
Traffic control system signs must comply with section 12 -3.11.
12-4.02C(8)(b) Connector and Ramp Closure Signs
Inform m otorists of a temporary closing of a (1) connector or a (2) freeway or expressway entrance or exit ramp using:
1.SC6-3(CA) (Ramp Closed) sign for closures of 1 day or less
2.SC6-4(CA) (Ramp Closed) sign for closures of more than 1 day SC6-3(CA) and SC6 -4(CA) signs must be stationary mounted at the locations shown and must remain in place and visible to motorists during the connector or ramp closure. Notify the Engineer at least 2 business days before installing the sign and install the sign from 7 to 15 days before the closure.
12-4.02C(9) Flagging
12-4.02C(9)(a) General
12-4.02C(9)(a)(i) Summary
Section 12 -4.02C(9) includes specifications for flaggers, AFAD operators, additional flaggers, advance flaggers and flagger stations.
12-4.02C(9)(a)(ii) Defi nitions
AFAD operator : Flagger certified by the manufacturer to operate the specific automated flagger assistance device . additional flagger: Flagger that controls the flow of traffic at intermediate locations within the limits of a closure with reversible control, at intersections, driveways and other traffic merging points. advance flagger: Flagger positioned upstream of the traffic control system, who warns approaching traffic of road work ahead and potentially stopped traffic within the advance warning signs. incidental flagger: Flagger that performs flagging that is not part of a traffic control system.
12-4.02C(9)(a)(iii) Submittals
Submit as informational submittals :
1.Flagger certification for each flagger including AFAD operators. The s ubmittal must include : 1.1. Name of the individual receiving certification 1.2. Name of entity providing certification 1.3. Date of certification 1.4. Certification expiration date
2.AFAD manufacturer certification for each AFAD operator. The s ubmittal must include : 2.1. Name of the manufacturer 's authorized trainer 2.2. Name of the trainee 2.3. Description of device type and model for which training was provided 2.4. Date when the train ing was provided
3.Training qualifications for each incidental flagger .
12-4.02C(9)(a)(iv) Quality Assurance
Flaggers must be at least 18 years of age and maintain a valid government issued identification and must possess proof of certification during f lagging operations . Flaggers that are part of a traffic control system must be certified by an authorized flagger training provider. The authorized flagger training provider list is available at the Department's Division of Construction website. SECTION 1 2 TEMPORARY TRAFFIC CONTROL In additio n, AFAD operators must be certified by the AFAD manufacturer on :
1.Device type and model to be used on the project
2.Installation procedures
3.Local and remote -controlled operation
4.Maintenance of the device Incidental flaggers must be trained under 8 CA Code of Regs § 1599 .
12-4.02C(9)(b) Materials
Not Used
12-4.02C(9)(c) Construction
12-4.02C(9)(c)(i) General
Reserved
12-4.02C(9)(c)(ii) Flaggers
12-4.02C(9)(c)(ii)(A) General
Flaggers should stand in a conspicuous place and be visible to approaching vehicles. Flaggers must wear a hard hat, safety glasses, and Class 3, high -visibility, safety apparel under ANSI/ ISEA 107 -2004, or equivalent subsequent revisions. Flaggers must be equipped with a 24 -by-24-inch "STOP/SLOW " paddle with a rigid s taff tall enough to maintain the bottom of the paddle a minimum of 6 feet above the pavement .
12-4.02C(9)(c)(ii)(B) Automated Flagger Assistance Device Operators
When AFADs are in operation, the AFAD operators must:
1.Be positioned a way from the traveled way
2.Be positioned where they have an unobstructed line of sight to approaching vehicles and to the devices
3.Keep a backup hand held AFAD remote control readily available A pilot car driver must not operate a device and must not be considered as one of the flaggers present on-site available to operate a device .
12-4.02C(9)(c)(ii)(C) Additional Flaggers
Provide additional flaggers at any of the following locations:
1.At high -volume intersections and driveways between the two flagger stations as descr ibed
2.At Multi -lane and circular intersections For other intersections and driveways, place a sign as described . Additional flaggers use the STOP/SLOW sign paddle to control vehicles merging into the closure with reversible control. If additional flagge rs are not described, providing additional flaggers is change order work.
12-4.02C(9)(c)(ii)(D) Advance Flaggers
Provide advance flaggers when any of the following conditions exist:
1.Queued traffic reaches the W20-4 (One Lane Road Ahead ) sign.
2.When t he horizontal roadway curvature restricts the sight distance of approaching traffic .
3.When the vertical roadway curvature restricts the sight distance of approaching traffic . Advance flaggers use the SLOW sign paddle to warn approaching vehicles of the flagging operation ahead and signals the drivers to slow down. If the STOP/SLOW paddle is used, the STOP side must be covered. If advance flaggers are not described, providing advance flaggers is change order work. SECTION 1 2 TEMPORARY TRAFFIC CONTROL
12-4.02C(9)(c)(iii) Flagger Stations
Place f lagger stations such that approaching vehicles have sufficient distance to react and follow the flagger's instructions . Place a minimum of four cones at 50 feet intervals in advance of flagger stations. During the hours of darkness, illuminate flag ger stations under 8 CA Regs § 1523. Do not start flagging until flagger stations are illuminated. Place advance warning signs W20 -1, C9A(CA), and W3 -4 upstream of the additional flagger station at intersections as shown. Place advance warning signs W20 -1, C9A(CA), and W3 -4 upstream of the advance flagger station. Remove the W20 -1 sign from all flagger stations downstream from the advance flagger station furthest from the work area. You may use a full-matrix PCMS in place of an advance flagger. The PCMS mus t alternately display the message "Prepare to Stop" and the C9A(CA) sign graphic. Place a portable W20 -1 sign in advance of the PCMS. If the distance E shown is 1,000 feet or more, place a SW60(CA) as shown . Place an additional SW60(CA) sign for every addi tional 1 ,000 feet of sepa ration, space the signs at 1 ,000-foot intervals.
12-4.02C(9)(d) Payment
Not Used
12-4.02C(10) End of Queue Monitoring and Warning with Pickup Truck Mounted Changeable
Message Sign
12-4.02C(10)(a) General
12-4.02C(10)(a)(i) Summary
Section 12 -4.02C(10) includes specifications for end of queue monitoring and warning using pickup truck mounted changeable message sign (PTMCMS) . End of queue monitoring and warning includes providing PTM CMS , monitoring the end of queue, and warning approaching traffic .
12-4.02C(10)(a)(ii) Definitions
Reserved
12-4.02C(10)(a)(iii) Submittals
Submit a weekly report of PTM CMS operation by Tuesday of the following week. The report must indicate the date, time, message, county, route, post mile or station and direction for each PTM CMS .
12-4.02C(10)(a)(iv) Quality Assurance
Reserved
12-4.02C(10)(b) Materials
Not Used
12-4.02C(10)(c) Construction
Provide 1 PTM CMS in the direction of travel for freeway, expressway, or multilane conventional highway closures. Provide 2 PTM CMS for two -lane conventional highway closures, one for each direction of travel. Place the PTM CMS upstream of the:
1.W20-1 (ROAD WORK AHEAD) for a stationary closure
2.California Highway Patrol (CHP) vehicle for a traffic break Place the PTM CMS at the distance shown in the following table: SECTION 1 2 TEMPORARY TRAFFIC CONTROL PTMCMS Minimum Upstream Distance Road Type Distance (ft) Urban – More than 40 mph 350 Rural 500 Expressway / Freeway 2,640 The distances in the PTMCMS Minimum Upstream Distance table are approximate and intended for guidance only. Based on field conditions increase the PTMCMS upstream distance. Start monitoring the end of queue when:
1.The first merging taper is installed for stationary closures
2.CHP vehicle starts to pace traffic for traffic break Reposition the PTM CMS to maintain the distance shown in the table titled “ PTM CMS Minimum Upstream Distance ,” upstream of the end of queue . Turn on the PTM CMS and display the alternating message :
1.SLOW TRAFFIC AHEAD and PREPARE TO STOP when traffic is moving at 10 mph or more , below the posted speed limit
2.STOPPED TRAFFIC AHEAD and PREPARE TO STOP when traffic stops upstream of the W20 -1 (ROAD WORK AHEAD) sign or the CHP vehicle If quick changing traffic conditions or useable shoulder area limitations do not allow for repositioning of PTM CMS , place additional PTM CMS upstream to warn traffic. Addit ional PTM CMS are change order work . Monitor the end of queue and r eposition PTM CMS until the traffic condition abates and traffic speed is within 10 mph of the posted speed limit . If the location of the PTM CMS falls outside the project limits notify the En gineer and continue to monitor the end of queue and warn traffic . If the traffic speed falls 10 mph or more below the posted speed limit after removing the lane closure , notify the Engineer and continue to warn traffic and monitor the end of queue for up t o 2 hours. Monitoring the queue and warning traffic after the 2 hours is change order work.
12-4.02C(10)(d) Payment
Not Used
12-4.02C(11) Traffic Control Technician
12-4.02C(11)(a) General
12-4.02C(11)(a)(i) Summary
Section 12 -4.02C(11) includes specifications for training, certification, and responsibilities for traffic control technicians . The traffic control technician:
1.Is responsible for the installation, maintenance, and removal of traffic control devices
2.Must have the authority to assign and direct flagging operations
3.Must be knowledgeable about: 3.1. Section 7 -1.03 "Public Convenience" 3.2. Section 7 -1.04 "Public Safety" 3.3. Section 12 "Temporary Traffic Control" 3.4. Traffic control system Standard Plan s 3.5. Traffic handling plans and detour plans Assign a traffic control technician to each closure.
12-4.02C(11)(a)(ii) Definitions
Reserved SECTION 1 2 TEMPORARY TRAFFIC CONTROL
12-4.02C(11)(a)(iii) Submittals
12-4.02C(11)(a)(iii)(A) General
Every Monday by noon, submit traffic control daily reports for the previous week as an informational submittal .
12-4.02C(11)(a)(iii)(B) Quality Assurance Submittals
Submit the following as informational submittals:
1.Traffic control technician certification and flagger certification for each traffic control technician and each alternate traffic control technician. The certification must include: 1.1. Name of the individual receiving certification 1.2. Name of entity providing certification 1.3. Date of certification 1.4. Certification exp iration date
2.Contact information for each traffic control technician and each alternate traffic control technician. The submittal must include the name, phone number and email address.
3.Traffic control daily reports for each closure. The traffic contr ol daily report must include: 3.1. Date 3.2. Name of traffic control technician 3.3. Location of traffic control . Provide description, County, Route, Postmile or Station and Direction 3.4. Reference to traffic control standard plan or project plan sheet 3.5. For closure information include: 3.5.1 . Lane requirement chart number, start time, and end time 3.5.2. Facility type: conventional highway, freeway, expressway, on ramp, off ramp, or connector, street 3.5.3. Number of lanes closed, which lanes are closed, or shoulder closure 3.5.4. Names of flaggers, if applicable 3.5.5. Use of construction work zone speed limit reduction, buffer lanes, or COZEEP support, if applicable 3.6. Documentation of: 3.6.1. LCS Mobile web page status confirmation for 1097 and 1098, or 1022 3.6.2. Verification that closure is in compliance with the contract requirements 3.6.3. Modifications to the traffic control including, a description of the change, the reason for the change, time when the change is implemented 3.6.4. Traffic control system monitoring including, time of inspection and observations 3.6.5. Incidents that occur while the traffic control system is in place
12-4.02C(11)( a)(iv) Quality Assurance
12-4.02C(11)(a)(iv)(A) General
The traffic control technici an must c oordinate with the Engineer the implementation of traffic control systems and traffic handling plans prior to con struction , and before major changes in traffic control.
12-4.02C(11)(a)(iv)(B) Training and Certifications
A traffic control technici an must be certified as a flagger and as a traffic control technician. The Department authorized traffic control technician and flaggers training providers list is available at: https://dot.ca.gov/programs/construction/safety -traffic/safety -training -course s
12-4.02C(11)(a)(iv)(C) Quality Control
The traffic control technician must:
1.Ensure safe , convenient, and effective passage of motorists, bicyclists, pedestrians, workers, and first responders , through or around the construction work zone
2.Inspect the condition of traffic control devices on a regular basis for compliance with the quality requirements in the American Traffic Safety Services Association publication Quality Guidelines for Temporary Traffic Control Devices and Features
3.Ensure the labor, equipment, and materials are available to immediately correct deficiencies in the traffic control system
4.Ensure workers performing flagging operations meet the flagger 's certificate requirements SECTION 1 2 TEMPORARY TRAFFIC CONTROL
5.Ensure the status of closures is repo rted using the LCS Mobile web page
6.Verify that all closures comply with the contract requirements and that traffic control devices, including PCMS, arrow boards and radar speed feedback signs, are functioning a fter traffic control installation
12-4.02C(11)(b) Material s
Not Used
12-4.02C(11)(c) Construction
For each closure, a traffic control technician must be present during the installation, operation, and removal of the traffic control system. Notify the Engineer of the assigned traffic cont rol technician for each closure 1 business day before the closure . Notify the Engineer before an alternate traffic control technician assumes the duties of the assigned traffic control technician. Traffic control technicians must be available by:
1.Cellul ar telephone
2.Two-way radio
3.Mobile internet access Traffic control technician must:
1.Mark the locations for traffic control devices before installation of closures
2.Monitor work zone traffic control activities and operations, including detours, to ensure the traffic control is functioning properly When monitoring work zone traffic control, if an imminent danger is identified , take immediate corrective action and notify the Engineer . Notify the Engineer of modifications needed to the traffic control system plans or traffic handling plans if the traffic control is not functioning as required due to changes in traffic or site conditions. Do not implement a ny changes to the traffic control system plans or traffic handling p lans until the proposed revisions are authorized .
12-4.02C(11)(d) Payment
Not Used
12-4.02C(12) Construction Work Zone Speed Limit Reduction
Reserved
12-4.02C(13) Traffic Control Supervision
Reserved
12-4.02C(14) 12-4.02C(25) Reserved
12-4.02D Payment
The Department pays for change order work for a traffic control system by force account for increased traffic control and uses a force account analysis for decreased traffic control. The Department does not pay for furnishing, placing, relocating, and rem oving PCMSs used for a traffic break. The Department deducts the full cost of COZEEP support provided for the traffic break. The hourly rate for each California Highway Patrol officer providing COZEEP support is $115. This rate includes full compensation for each hour or portion thereof that the officer provides the support. Markups are not added to any expenses associated with COZEEP support. The minimum number of hours for an officer is 4 hours, except if a closure is already in place and th e Engineer authorizes your request for an on -duty officer to conduct a traffic break, the minimum number of hours for an officer is 1 hour. SECTION 1 2 TEMPORARY TRAFFIC CONTROL For a cancellation less than 48 hours before the scheduled start time of COZEEP support, except for a cancellation d ue to adverse weather or extenuating circumstances, the Department deducts:
1.Minimum of $50 per California Highway Patrol officer if the officer is notified before the start time
2.Maximum of 4 hours of pay per officer if the officer is not notified bef ore the start time
12-4.03 Falsework Openings
12-4.03A General
Section 12 -4.03 includes specifications for providing falsework openings .
12-4.03B Materials
Not Used
12-4.03C Construction
12-4.03C(1) General
Reserved
12-4.03C(2) Temporary Barrier Sys tem
Install temporary barrier system on both sides of vehicular openings through falsework. If ordered, install temporary barrier system at other falsework less than 12 feet from the edge of a traffic lane. This is change order work. Temporary barrier syst em for vehicular openings must start 150 feet in advance of the falsework and extend past the falsework in the direction of adjacent traffic flow. For 2 -way traffic openings, temporary barrier system must extend at least 60 feet past the falsework in the d irection of adjacent traffic flow. Install temporary crash cushion modules as shown at the approach end of temporary barrier system located less than 15 feet from the edge of a traffic lane. For 2 -way traffic openings install temporary crash cushion module s at the departing end of temporary barrier system located less than 6 feet from the edge of a traffic lane. The Engineer determines the exact location and length of temporary barrier system and the type of flare to be used . Install temporary barrier syste m for protecting the falsework before erecting it. Do not remove temporary barrier system until authorized.
12-4.03D Payment
Not Used
12-4.04 Temporary Pedestrian Access Routes
12-4.04A General
12-4.04A(1) Summary
Section 12 -4.04 includes specifications for providing, maintaining, and removing temporary pedestrian access routes. A temporary pedestrian access route includes temporary traffic control devices as shown except for temporary barrier system and temporary crash cushions.
12-4.04A(2) Definitions
Reserved
12-4.04A(3) Submittals
If work activities require the closure of a pedestrian route and a temporary pedestrian access route is not shown, submit a work plan for a temporary pedestrian access route. The work plan must:
1.Describe t he activities, processes, equipment, and materials that will be used to provide the temporary access route
2.Show the locations of the routes and the placement of traffic control devices for each stage of work SECTION 1 2 TEMPORARY TRAFFIC CONTROL
3.Include a time -scaled logic diagram displa ying the sequence and duration of the planned activities for each stage of work
4.Be sealed and signed by an engineer who is registered as a civil engineer in the State Submit "Temporary Pedestrian Access Route Contractor Compliance Report," within 2 bus iness days after construction of a temporary pedestrian access route. Submit "Temporary Pedestrian Access Route Contractor Weekly Report," within 2 business days of completing a weekly inspection.
12-4.04A(4) Quality Assurance
12-4.04A(4)(a) General
Rese rved
12-4.04A(4)(b) Quality Control
Perform a review of the temporary pedestrian access route after it is constructed and document compliance on the "Temporary Pedestrian Access Route Contractor Compliance Report." The Department will conduct a verificati on inspection after receiving the compliance report. For a temporary pedestrian access route in use perform a weekly review and document compliance on the "Temporary Pedestrian Access Route Contractor Weekly Report."
12-4.04B Materials
The walkway surface must be slip resistant and surfaced with minor HMA or commercial -quality, bituminous material, commercial -quality concrete, or wood. A handrail with a circular cross section must have an outer diameter from 1 -1/4 to 2 inches. A handrail with a noncircular cross section must have a perimeter from 4 to 6 -1/4 inches and a maximum cross - section dimension of 2 -1/4 inches. Fasteners must be rounded to prevent injury to a pedestrian's fingers, hands, and arms and to eliminate sharp edges that could catch on cloth ing. A detectable warning surface must be on the Authorized Material List for detectable warning surfaces and match yellow color no. 33538 of AMS -STD-595. Temporary traffic control devices used to channelize pedestrians must:
1.Be free of sharp or rough edges
2.Have a continuous detectable edging at least 6 inches high and at no more than 2 inches above the walkway surface
3.Be at least 32 inches in height
4.Have smooth connection points between devices to allow for a handrail
5.Have a top and b ottom surface in the same vertical plane
12-4.04C Construction
Notify the Engineer 5 business days before closing an existing pedestrian route. Do not close the route until authorized. If work activities require the closure of a pedestrian route and a te mporary pedestrian access route is not shown, provide a temporary pedestrian access route near the traveled way. You may route pedestrians using the existing sidewalk or by constructing a temporary access route. If a bid item for a temporary pedestrian acc ess route is not shown on the Bid Item List, then constructing a temporary pedestrian access route is change order work, except when the closure is a result of your means and methods. Construct a temporary pedestrian access route such that:
1.Walkway surf ace is firm and stable and free of irregularities
2.Cross slope of the pedestrian route is at most 50:1 (horizontal:vertical) SECTION 1 2 TEMPORARY TRAFFIC CONTROL
3.Longitudinal slope of the pedestrian route is at most 20:1 (horizontal:vertical)
4.Walkway, landings, blended transitions, an d curb ramps are at least 60 inches wide except where not feasible, the width must be at least 48 inches wide with a 60 -by-60-inch passing space at least every 200 feet
5.Lateral joints or gaps between surfaces are less than 1/2 inch wide
6.Discontinuiti es in surface heights are less than 1/2 inch and beveled if greater than 1/4 inch with a slope no greater than 2:1 (horizontal:vertical)
7.Ramps have: 7.1. Longitudinal slope of at most 12:1 (horizontal:vertical) 7.2. Rise less than 30 inches 7.3. Protect ive edging at least 2 inches high on each side and handrails at a height from 34 to 38 inches above the walkway surface if the rise is greater than 6 inches
8.Curb ramps have: 8.1. Longitudinal slope of at most 12:1 (horizontal:vertical) 8.2. Protective e dging at least 2 inches high on each side if the curb ramp does not have flares and the rise is greater than 6 inches
9.Pedestrians are channelized when routed off existing pedestrian routes Construct handrails such that they are continuous , smooth and f ree of sharp or rough edges. Provide an overhead covering to protect pedestrians from falling objects and drippings from overhead structures. If the temporary access route is next to traffic or work activities, place a temporary barrier to separate the route from vehicles and equipment. Install a detectable warning surface at locations where a curb ramp, landing, or blended transition connects to a street. Install the warning surface such that it extends a minimum of 36 inches in the direction of travel and for the full width of the landing, blended transition, or curb ramp, excluding the flares. Maintain the temporary pedestrian access route clear of obstructions. Do not allow traffic control devices, equipment, or construction materials to protrude into the walkway. Maintain a continuous unobstructed path connecting all pedestrian routes, parking lots, and bus stops located within the project limits. Remove the temporary pedestrian access route when the Engineer determines it is no longer needed. Provide a temporary pedestrian access route through falsework under section 16 -2.02.
12-4.04D Payment
Not Used
12-4.05 Bridge Cleaning and Painting Activities
12-4.05A General
Section 12 -4.05 includes specifications for maintaining traffic during bridge cleani ng and painting activities. Signs must comply with section 12 -3.11.
12-4.05B Materials
Not Used
12-4.05C Construction
For bridge cleaning and painting activities, place the signs as shown in the following table in addition to those shown on the plans: SECTION 1 2 TEMPORARY TRAFFIC CONTROL Sign no. Sign description Requirement W20-1 Road Work Ahead Place portable 30 -by-30-inch signs at locations where traffic approaches a bridge with work underway. If the approach speed is greater than 50 mph, the sign must be 48 by 48 inches. The sign panel base material must not be plywood. Attach 2 orange, 16 sq in flags to each sign. --Cleaning and Painting Operations Place a 48 -by-48-inch sign near each W20 -1 sign. Use 4 -inch- high black lettering and include your name, address, and telephone number on an orange background. The Engineer determines the exact locations of the signs. Do not use signs until nee ded. Maintain the signs in place during bridge cleaning and painting activities. Remove the signs at the end of each work shift. After each day's bridge cleaning and painting activities, remove obstructions from the roadway to allow for free passage for tr affic. Remove blast cleaning residue from the traveled way before opening the area to traffic. You may lay supply lines along the top of curbs adjacent to railing posts if the lines do not interfere with traffic. Remove the lines when work is not in progre ss.
12-4.05D Payment
Not Used
12-4.06 Toll Bridges
Reserved
12-4.07 12-4.10 Reserved
12-5 Reserved
12-6 Temporary Pavement Delineation
12-6.01 General
Section 12 -6 includes specifications for placing temporary pavement delineation except for delineation on a seal coat project. Temporary painted traffic stripes and painted pavement markings used for temporary delineation must comply with section 84 -2. Temporary signs for no -passing zones must comply with section 12 -3.11.
12-6.02 Materials
12-6.02A General
The following types of temporary pavement delineation must be on the Authorized Material List for signing and delineation materials:
1.Temporary pavement markers for long term day/night use (180 days or less)
2.Temporary pavement markers fo r short term day/night use (14 days or less)
3.Temporary (removable) striping and pavement marking tape (180 days or less)
4.Permanent traffic striping and pavement marking tape
5.Channelizers
12-6.02B Temporary Pavement Markers
Temporary pavement mar kers must be the same color as the lane line or centerline markers being replaced. Temporary pavement markers must be for long -term day or night use, 180 days or less, except you may use temporary pavement markers for short -term day or night use, 14 days o r less, if you place the permanent pavement delineation before the end of the 14 days. SECTION 1 2 TEMPORARY TRAFFIC CONTROL
12-6.02C Channelizers
Channelizers used for temporary edge line delineation must be orange and surface mounted.
12-6.03 Construction
12-6.03A General
If work activiti es obliterate pavement delineation, place temporary or permanent pavement delineation before opening the traveled way to traffic. The temporary pavement delineation must consist of a lane line and centerline pavement delineation for traveled ways open to t raffic. On multilane roadways, freeways, expressways, and 2 -lane roadways with shoulders 4 feet or more in width, the temporary pavement delineation must also include edge line delineation for traveled ways open to traffic. Establish the alignment for temp orary pavement delineation, including the required lines or markers. Surfaces to receive an application of paint or removable traffic tape must be dry and free from dirt and loose material. Do not apply temporary pavement delineation over existing pavement delineation or any other temporary pavement delineation. Maintain temporary pavement delineation until no longer needed or replace it with a new striping detail of temporary or permanent pavement delineation. When the Engineer determines the temporary pav ement delineation is no longer required for the direction of traffic, remove the temporary pavement delinea tion, including any underlying adhesive for temporary pavement mark ers, from the final layer of surfacing and from the pavement to rem ain in place. Remove temporary pavement delineation that conflicts with any subsequent or new traffic pattern for the area.
12-6.03B Temporary Lane Line and Centerline Delineation
If lane lines or centerlines are obliterated and temporary pavement delineation to replace the lines is not shown, the minimum lane line and centerline delineation must consist of temporary pavement markers placed longitudinally at 24 -foot maximum intervals. For temporary lane line or centerline delineation consisting entirely of temporary pave ment markers for short -term day or night use, 14 days or less, do not use the markers for more than 14 days on lanes opened to traffic. Place the permanent pavement delineation before the end of the 14 days. If the permanent pavement delineation is not pla ced within 14 days, replace the temporary pavement markers with additional temporary pavement delineation equivalent to the pattern described for the permanent pavement delineation for the area. If no-passing centerline pavement delineation is obliterated, install the following temporary no -passing zone signs before opening lanes to traffic:
1.W20-1 (Road Work Ahead) sign from 1,000 to 2,000 feet in advance of the no -passing zone
2.R4-1 (Do Not Pass) sign at the beginning of the no -passing zone and at 2,000 -foot maximum intervals within the no -passing zone
3.W7-3a (Next ___ Miles) plaque beneath the W20 -1 sign for continuous zones longer than 2 miles
4.R4-2 (Pass With Care) sign at the end of the no -passing zone The Engineer determines the exact loca tion of temporary no -passing zone signs. Maintain the temporary no-passing zone signs in place until you place the permanent no -passing centerline pavement delineation. Remove the temporary no -passing zone signs when the Engineer determines they are no lon ger required for the direction of traffic.
12-6.03C Temporary Edge Line Delineation
On mu ltilane roadways, freeways, expressways, and 2 -lane roadways with shoulders 4 feet or more in width open to traffic where edge lines are obliterated and temporary pav ement delineation to replace those edge lines is not shown, provide temporary pavement delineation for :
1.Right edge lines consisting of any of the following: 1.1. Solid 6 -inch-wide traffic stripe tape of the same color as the stripe being replaced . 1.2. Traffic cones placed longitudinally at 100 -foot maximum intervals . 1.3. Portable delineators or channelizers placed longitudinally at 100 -foot maximum intervals .
2.Left edge lines consisting of any of the following: 2.1. Solid 6 -inch-wide t raffic stripe tape of the same color as the stripe being replaced . SECTION 1 2 TEMPORARY TRAFFIC CONTROL 2.2. Traffic cones placed longitudinally at 100 -foot maximum intervals . 2.3. Portable delineators or channelizers placed longitudinally at 100 -foot maximum intervals . 2.4. Temporary pavemen t markers placed longitudinally at 6 -foot maximum intervals . You may apply temporary traffic stripe paint of the same color as the stripe b eing replaced instead of solid 6-inch-wide temporary traffic stripe tape where the removal of the temporary traffic stripe is not required. The Engineer determines the lateral offset for traffic cones, portable delineators, and channelizers used for temporary edge line delineation. If traffic cones or portable delineators are used for temporary edge line delineation, ma intain the cones or delineators during the hours of the day when they are in use. Cement the bases of channelizers used for temporary edge line delineation to the pavement with hot melt bituminous adhesive as specified in section 81 -3 for cementing pavemen t markers to pavement.
12-6.03D Temporary Traffic Stripe, Pavement Marking, and Pavement Markers
12-6.03D(1) General
Reserved
12-6.03D(2) Temporary Traffic Stripe Tape
Except where the temporary traffic stripe is used for 14 days or less, apply temporar y removable traffic stripe tape under the manufacturer's instructions and as follows:
1.Slowly roll the tape with a rubber -tired vehicle or roller to ensure complete contact with the pavement surface.
2.Apply the tape straight on a tangent alignment and on a true arc on a curved alignment.
3.Do not apply the tape when the ambient air or pavement temperature is less than 50 degrees F unless otherwise authorized. For temporary traffic stripe tape used for 14 days or less, apply the temporary removable traffic stripe tape under the manufacturer's instructions.
12-6.03D(3) Temporary Traffic Stripe Paint
Apply temporary traffic stripe paint under section 84 -2.03, except you may apply 1 or 2 coats of the temporary traffic stripe paint for new or existing pavement. You are not required to remove painted temporary traffic stripe that will be covered by paving work.
12-6.03D(4) Temporary Pavement Marking Tape
Apply temporary removable pavement marking tape as specified for applying temporary remova ble traffic stripe tape in section 12 -6.03D(2).
12-6.03D(5) Temporary Pavement Marking Paint
Apply temporary pavement marking paint under section 84 -2.03, except you may apply 1 or 2 coats of the temporary pavement marking paint. You are not required to r emove of painted temporary pavement markings that will be covered by paving work. You may use permanent or temporary removable pavement marking tape instead of temporary pavement marking paint.
12-6.03D(6) Temporary Pavement Markers
Place temporary paveme nt markers under the manufacturer's instructions. Cement temporary markers to the surfacing with the manufacturer's recommended adhesive except do not use epoxy adhesive in areas where the removal of the pavement markers is required. You may use retrorefle ctive pavement markers instead of temporary pavement markers for long -term day or night use, 180 days or less, except to simulate patterns of broken traffic stripe. Retroreflective pavement markers used for temporary pavement markers must comply with secti on 81 -3, except the waiting period before placing pavement markers on new asphalt concrete surfacing as specified in SECTION 1 2 TEMPORARY TRAFFIC CONTROL section 81 -3.03 does not apply. Do not use epoxy adhesive to place pavement markers in areas where the removal of the pavement markers is r equired.
12-6.04 Payment
The Department does not pay for additional temporary pavement delineation used to replace temporary pavement markers. Temporary traffic stripe is measured as specified for traffic stripe in section 84. Temporary pavement marking i s measured as specified for pavement marking in section 84.
12-7 Temporary Pavement Delineation for Seal Coats
12-7.01 General
Section 12 -7 includes specifications for placing temporary pavement delineation for a seal coat project. Temporary signs for no -passing zones must comply with section 12 -3.11.
12-7.02 Materials
Temporary raised pavement markers for seal coat applications must be temporary pavement markers for short -term day or night use, 14 days or less, on the Authorized Material List for signing and delineation materials.
12-7.03 Construction
Before applying binder that will obliterate existing traffic stripes, place temporary raised pavement markers on the existing traffic stripes except for right edge lines at 24 -foot maximum intervals. Place 2 markers side by side on double traffic stripes with 1 marker placed on each stripe longitudinally at 24 -foot maximum intervals. Place temporary raised pavement markers under the manufacturer's instructions. Before opening the lanes to uncontrolled traffic, remove the covers from the temporary raised pavement markers. If you obliterate no -passing centerline pavement delineation, install the following temporary no -passing zone signs before opening lanes to traffic:
1.W20-1 (Road Work Ahead) sign fro m 1,000 to 2,000 feet in advance of the no -passing zone
2.R4-1 (Do Not Pass) sign at the beginning of the no -passing zone and at 2,000 -foot maximum intervals within the no -passing zone
3.W7-3a (Next ___ Miles) plaque beneath the W20 -1 sign for continuous zones longer than 2 miles
4.R4-2 (Pass With Care) sign at the end of the no -passing zone The Engineer determines the exact location of the temporary no -passing zone signs. Maintain the temporary no -passing zone signs in place until you place the permane nt no -passing centerline pavement delineation. Remove the temporary no -passing zone signs when the Engineer determines they are no longer required for the direction of traffic. Maintain temporary pavement delineation until you replace it with the permanent pavement delineation.
12-7.04 Payment
Not Used
12-8 12-10 Reserved
Source: California Standard Specifications, 2024 Edition. Pages 159–206 of 1,372.