619Traffic Control for Construction Zones

619.01 Description . This work consists of furnishing, placing, maintaining or replacing

as necessary, removing when no longer applicable and installation at other locations all traffic control devices including pavement marking materials (paint, tape, markers, etc.) in accordance with contract provisions an d as directed by the Engineer.

619.02 Materials . Certification of traffic control devices shall be in accordance with the

provisions of Subsection 619.02.13. 619.02.1--Painted Traffic Stripe . Painted traffic stripe shall meet the applicable requirements of Sections 710 and 720. The temporary traffic paint can be waterborne pa int or fast dry solvent traffic paint meeting the requirements set out in Section 710. When using fast dry solvent traffic stripe, no paint can be sprayed or placed on the ground during set-up or clean-up. 619.02.2--Pavemen t Marking Tape . Preformed pavement marking materials must be listed on the Department's APL and meet the requirements of Subsection 720.05. 619.02.3--Reflective Ra ised Pavement Markers . Raised pavement markers must be on the Department's APL and shall meet the app licable requirements of Subsection 720.03.

619.02.4 Construction Signs . Construction signs shall meet the applicable requirements

of Sections 618 and 721 and the following: Sign supports may be steel beams, structural steel pipe, steel U-section posts, 4-inch x 4- inch wood posts, portable easels, or barric ades as required for installation. Breakaway bases shall be provided for all steel beams and pipe posts. Portable sign supports may be used for daylight operations, moving work ar eas, or other short-term activities. Standards for height of construction signs shall be those shown for roadside signs in Chapter 6F of the MUTCD. Signs mounted on portable supports or barricades may be at lower heights but the bottom of the sign shall be no less than one foot above the traveled way. Unless specified otherwise, fluorescent orange reflective sheeting, meeting the requirements of Subsection 721.06, shall be used on all construction signs regardless of whether used during daytime or nighttime hours. Unless otherwise specified on the plans, the ma terial on which the reflective sheeting is to be applied shall be as a minimum, 16-gauge steel, 0.080-inch aluminum, or 5/8-inch high density overlaid plywood. Ungalvanized st eel, exterior grade plyw ood and lumber shall have a minimum of two coats of paint on front, back, and edges. High density overlaid plywood shall have the edges painted. The material to which reflective sheeting is to be applied shall be prepared in accordance with the recommendations of the sheeting manufacturer. For new signs, the Contractor shall furnish the Engineer with three certified copies of a statement or test report from the producer indicating that th e signs meet the requirements of the specifications. Previously used signs will be accepted on the basis of reflectivity and legibility. Reflectivity for these signs may be tested by the Engineer in accordance with the procedures set out below or by the Central Laboratory. If tested by the Central Laboratory, the reflective sheeting shall have at least 50 percent of the reflectivity specified for new sheeting. Tests performed in the Central Laboratory will be for reflectance only, and the Contractor shall pay the testing charges. Legi bility in all cases will be determined by the Engineer. The determination for reflectivity and legibility by the Engineer will be made from the driver’s seat of an automobile with the headlamps on low beam between the hours of one hour after sunset and one hour before sunrise at the distance specifi ed below. The signs shall be mounted at the specified height for each type sign as it is being tested. Should the Contractor elect to have the signs tested in place, each sign not meeting the requirements of these specifications shall be immediatel y removed and replaced. The Engineer will certify by letter to the State Materials Engineer that the signs have been tested and accepted under this procedure. A sign will be considered as meeting the reflectivity requirements of this specification when the shape and color of the sign can be unquestionably identified at a distance of 1500 feet from the sign. In cases where grade or alignment will not permit a sight distance of 1500 feet, the distance for specification compli ance shall be the furthermost point at which the complete sign becomes visible. If there is a question as to a sign being acceptable, the sign may be sent to the Central Laboratory for verification. Testing charges will be borne by the State when the verification test determines th at the sign is acceptable. Legibility will be acceptable when the sign lette rs and numerals are capable of being read at a distance determined by the following formula: D = 50 H D = Distance in Feet H = Letter/numeral height in inches

619.02.5 Advance Warning Flashing Arrow Panels . Flashing arrow panels shall meet

the requirements of Section 6F.61 of the MUTCD.

619.02.6 Median Barrier and Delineators . New precast concrete median barrier shall

meet the requirements of the plans, contract documents, and Section 615 except the surface may be a Class 1 ordinary surface finish unl ess designated otherwise. When precast concrete median barriers are no longer need ed at one location, as determined by the Engineer, the barriers shall be removed and reset at other designated locations. When barriers have to be stored until needed at another location, payment for removing and resetting will not be made until they are reset at their designated location. The Contractor shall furnish the storage area. The Engineer may allow the installation of used barriers for temporary traffic control upon an inspection and determination that the barrier units are structurally adequate for their intended purpose and they meet the requirements of this Section. Barriers with small chips or fractures not affecting th eir integrity may be accepted. Precast concrete barriers used on constructi on projects purchased or manufactured after October 1, 2002 must meet the requirements of NCHRP Report 350 or MASH. Precast median barriers purchased or manufactured prior to October 1, 2002 may be used until they complete their normal service life. Certification of precast concrete barriers shall be as required in Subsection 619.02.13. Portable median barrier shall be a highly portable, crashworthy barrier especially designed and used as a temporary barrier on highway construction projects. The barriers shall be designed so that it can be filled with water when in use and be easily drained for moving and transporting. The barrier shall be NCHRP Report 350 or MASH approved for the speed rating indicated on the plans or in the contract documents. The Contractor shall furnish the Engineer th ree copies of the manufacturer's certification stating that the portable median barriers furn ished meets the requirements of this Section. Delineators shall be listed on the Department's APL and meet the requirements of the plans and Section 6F.68 of the MUTCD.

619.02.7 Channelization Devices, Barricades, and Warning Lights . Channelization

devices, vertical panels, tubular markers, cones, drums, barricades and temporary raised islands shall meet the requirements of the pl ans and Sections 6F.63 through 6F.75 of the MUTCD. Drums shall be constructed of li ghtweight, deformable material capable of retaining reflective sheeting. Reflective shee ting for drums shall be Type III meeting the requirements of Subsection 721.06. Warning lights shall meet the requirements of Section 6F.83 of the MUTCD. The use of 2-inch nominal thickness timber for rails on Type III barricades has not been approved by NCHRP or MASH as a crashworthy device. Therefore, the use of 2-inch nominal thickness timbers will not be allowed for rails on Type III Barricades. Timber rails for Type III Barricades shall be as follows.  For barricades up to four feet (4’) wide, the maximum thickness of timber rails shall be one inch (1”) and the material shall be pine timber or ¾-inch ACX plywood.  For barricades more than four feet (4’) wide, timber rails shall be constructed of ¾- inch ACX plywood. A list of crashworthy Type III Barricades ca n be found at the following FHWA website. http://safety.fhwa.dot.gov/roadway_dept/policy_guide/road_hardware/wzd/

619.02.8 Traffic Signals and Flashers . Traffic signals and flashers shall meet the

requirements of the plans and Section 6F.84 & 6F.81 of the MUTCD.

619.02.8 1--Portable Traffic Signals. Portable traffic signals shall be trailer mounted

units that provide for easy transportation and quick setup and deployment. Each unit shall be self-contained. The types of port able traffic signals are as follows.  Type 1 portable traffic signal shall include one signal head that is mounted on the vertical upright of the trailer.  Type 2 portable traffic signal shall include two signal heads per trailer with one signal head mounted on an overhead mast arm that can be extended over the travel lane, and the other signal head shall be moun ted on the vertical upright of the trailer.  Type 3 portable traffic signal shall be the same as Type 2 mentioned above but with enhanced capabilities as mentioned in each applicable section below. The portable traffic signals shall be MUTCD Compliant and utilize standard ITE signal heads, and adhere to the ITE Specifications and Standards for Vehicle Traffic Control Signal Heads, Light Emitting Diode (LED) Circular Signal Supplement. The units shall be solar powered and be able to communicate with other portable signals via wireless communications. The unit shall include all the major components listed below or be able to perform the functions of these components. The major components of the unit shall include but are not limited to the trailer, telescoping mast arm (on Type 2), signal head(s) and back plates, traffic signal controller with operating software, solar charging system with batteries, input and output devices, flasher units, conflict monitor, relays, communications system and other equipment required for the safe operation and installation of the unit.

619.02.8 1.1--Signal Heads . The signal heads and all applicable components of the

portable traffic signal shall meet the physical display and operational requirements of conventional traffic signals as specific in th e Manual on Uniform Traffic Control Devices (MUTCD). The signal heads shall meet the requirement laid out in the Mississippi Standard Specification for traffic signa l heads and associated MDOT material specifications for traf fic signal heads. For Type 1, Type 2 and Type 3 signals, the signal heads shall have the ability to be rotated 180 degrees to face in the opposite direction and shall have the ability to rotate and lock in approximately 10 degree increments to position the signal head for the optimum visibility to motorists. For Type 1 signals, the signal head shall be mounted to the vertical upright of the trailer at a minimum height of eight feet (8') from th e bottom of the signal head unit to the road surface. For Type 2 signals, each unit shall contain two signal heads with one signal head mounted on an overhead mast arm that can be exte nded over the travel lane with a minimum clearance of 17 feet measured from the bottom of the signal head unit to the road surface. The lower signal head shall be mounted to the vertical upright of the trailer at a minimum height of eight feet (8') from the bottom of the signal head unit to the road surface. For Type 3 signals, each unit shall be the same as Type 2 mentioned above but with enhanced capabilities as mentioned below.

619.02.8 1.2--Con troller and Operating Requirements . The portable traffic signal

(Types 1, 2, and 3) shall include a controller that is in compliance with NEMA TS 1 Performance Standard. The controller shall have an easy to read front panel indicator display for showing and programming the configuration settings and controller status. The controller shall be capable of operating the portable traffic signal system in a fixed time, traffic actuated or manual control mode. Each portable traffic signal in a connected system shall have the capability to serve as either the ma ster or remote signal. Each portable traffic signal shall include a Conflict Monitor Un it (CMU), or Malfunction Management Unit (MMU) to ensure phase conflicts do not exist during operation. For Type 1 and Type 2 signals, a minimum of five (5) automatic time-of-day timing plans within a 24-hour period should be available in fixed time mode. The operating system should have the ability to control a minimum of four (4) traffic phases with programmable cycle time adjustments and user adjustable red, amber, minimum green and maximum green times. The operating system shall also have the capability of facilitating standby modes of red, red flash and yellow flash. For Type 3 signals, a minimum of ten (10) automatic time-of-day timing plans within a 24-hour period should be available in fixed time mode. The operating system should have the ability to control a minimum of 16 tra ffic phases with programmable cycle time adjustments and user adjustable red, amber, minimum green and maximum green times. The operating system shall also have the capability of facilitating standby modes of red, red flash and yellow flash. The system shall also have the ability to operate in vehicle actuation mode when vehicle detectors are used. The operating system shall have the capability to allow the Portable Traffic Signal to be connected to and co ntrolled by a standard NEMA controller. The system shall have the capability to be configured and controlled remotely using a flagger radio remote control at a dist ance up to ¼ mile from the master. The system shall have the capability of remote monitoring for reporting, at a minimum, signal location and status, battery voltage and system defaults. The remote monitoring shall have capability to alert designated individuals if a fault condition occurs. The operating system shall include password protection to prevent unauthorized programming.

619.02.8 1.3--Wireless Communications . The portable traffic signals shall communicate

with other portable traffic signals in the system via license-free wireless 900 MHZ radio link communications as specified in Subsection 662.02.2 of the radio Interconnect System specification. The radio units shall mainta in communications at a minimum distance of one (1) mile. The radio system shall conform to the applicable Federal Communications Commission requirements and all applicab le state and local requirements. The portable traffic signals shall be in direct communication at all times either by wireless or hardwire connection to provide for the required conflict monitor.

619.02.8 1.4--Power Requirements . The portable traffic signal shall be equipped with a

solar power array, charging unit and battery system. The number and size of batteries shall be sufficient to operate the Type 1 and Type 2 signals for a minimum of 21 days and Type 3 signals for minimum of 30 days without additional charging or assist from the solar array. An on-board battery charger shall be compatible with both the solar array and with a 120V AC power source. For Type 1 and Type 2 signals, the solar panel array shall provide for a minimum of 440 watts of solar collection capability. For Type 3 signals, the solar panel array shall provide for a minimum of 480 watts of solar collection capability and shall include a tilt and rotate system to optimally position the panels. All instrumentation for the electrical system and battery compartment shall be mounted in a lockable weatherproof enclosure. Solar panels shall be secured to the mounting brackets for theft prevention.

619.02.8 1.5--Trail er and Lift System . For Type 1 and Type 2 signals, the trailer and all

mounted components shall conform to the wind loading requirements of 80 mph minimum as described in the AASHTO Standard Specifications for Highway Signs, Luminaries and Traffic Signals. For Type 3 signals, the trailer and all mounted components shall conform to the wind loading requirements 90 mph minimum as described in the AASHTO Standard Specifications for Highway Signs, Luminaries and Traffic Signals. The trailer shall be made of structural steel and shall include four (4) leveling/stabilizer jacks capable of lifting the trailer a minimum of six inches (6”). The trailer shall be equipped with a hydraulic or electric lift system sufficient for one person to be able to raise and lower the verti cal upright and/or horizontal mast arm to and from the operating position. For Type 2 and Type 3 signals, the trailer shall be equipped to provide legal and safe transport on the public highway system at speeds up to 55 mph. All exterior metal surfaces, ex cept signal heads and back pl ates, shall be powder-coat painted highway safety orange.

619.02.9 Impact Attenuators . Impact attenuators must be listed on the Department's

“Approved Sources of Materials”. Approved impact attenuator systems shall meet standardized testing defined in NCHRP Report 350 or MASH. In addition, documentation from FHWA must accompany the devices, indicating that the devices meet the ap propriate crash test criteria and can be used on the National Highway System (NHS). Prior to installation, the Contractor shall provide two copies of the manufacturer’s installation de tails to the Project Engineer. The Project Engineer shall keep one copy in the project file and provide one copy to District Maintenance Engineer. The installation details shall be engineering drawings, a minimum of 11"x17" in size. Reflective adhesive sheeting with alternating black and yellow stripes (sloping downward at an angle of 45 degrees in the direction traffic is to pass) shall be required on the end of the attenuator section. The type of system installed shall be written on the device with a Permanent Marking Stick or some other means of permanent identification. When an impact attenuator is no longer need ed at one location, as determined by the Engineer, the attenuator shall be removed. When the contract documents contain provisions for the removal and resetting of impact attenuators, the attenuator shall be removed and reset at other designated locations. When an impact attenuator is stored until needed at another location, payment for removing and resetting will not be made until the attenuator is reset at the designated location. The Contractor shall furnish the storage area. Replacement Packages. Replacement packages shall consist of spare parts of the expected type and number needed to repair one hit for every three attenuators in place.

619.02.10 Temporary Guardrail . Temporary guardrail shall meet the requirements of

the plans and the applicable requirements of Sections 606 and 712.

619.02.11 Snap- Back Delineators . Snap-back delineators shall be selected from the list

of surface mounted flexible delineator post s as shown on the Department's "Approved Sources of Materials".

619.02.12 Terminal End Section. Terminal end sections, installed as per manufacturer’s

recommendations, must meet the requirements of NCHRP Report 350 or MASH. When specified in the plans, the terminal end sectio ns shall be the type specified, unless otherwise approved by the Engineer. Terminal end sections shall be Flared or Non-Flared and shall be one listed on the Department’s APL. The end sections shall be installed in accordance with the manufacturer’s recommendation. Prior to installation, the Contractor shall provide two copies of the manufacturer’s installation details to the Project En gineer. The Project Engineer will keep one copy in the project file and provide one copy to the District Maintenance Engineer. The installation details shall be engineering drawings, a minimum of 11” X 17” in size. Reflective adhesive sheeting with alternating black and yellow stripes (sloping downward at an angle of 45 degrees in the direction traffic is to pass) shall be required on the end of the terminal section. The type of terminal section installed shall be written on the device with a Permanent Marking Stick or some other means of permanent identification.

619.02.13 Certification of Traffic Control Devices. The Contractor will be required to

certify that the traffic control devices used on the project meets certain requirements. The traffic control devices shall be certified in accordance with the following requirements: Category 1 Traffic Control Devices. Category 1 traffic control devices are defined as low- mass, single-piece traffic cones, tubular marker s, single-piece drums with or without lights and hardware, and delineators. The Contractor shall certify to the Project Engineer by a letter ONLY stating that the Category 1 traffic control devices, furnished and used, meet the requirements of NCHRP Report 350 or MASH. All documentation supporting the certification is to be kept on file by the Contractor subject to review by the Department at any time. Support documentation shall be kept on file for two years after the completion of the project. The Contractor may self-certify Category 1 Traf fic Control Devices. In order to make the self-certification, the Contractor shall have as a minimum the following support documentation regarding the certification:

619.02.14 Changeable Message Sign. This work shall consist of furnishing, testing, and

maintaining a trailer-mounted electronic Portable Changeable Message Sign (PCMS) assembly. The sign display shall be a LED, full matrix sign. If more than one portable changeable message sign is required for this project, they shall all be of the same model and from the same manufacturer. All parts and materials used to construct the portable changeable message signs shall be interchangeable. The PCMS shall be a trailer-mounted, solar powered, portable changeable message sign. Each PCMS shall include the following main components:

619.02.14 1--Mechanical Construction. Each PCMS shall meet the following minimum

requirements. Weather-Tight Enclosure. The entire sign an d trailer assembly, in cluding each component / equipment exposed to weather, shall be fully protected. It shall withstand the effects of sand, dirt, dust, moisture, hose-directed wate r, ice, snow and UV radiation (UVA and UVB). It shall withstand the effects of high wind loading and blowing rain as specified herein with all outriggers and/or leveling jack s in place. The sign and all components shall be watertight. Space shall be provided for manuals to be stored in a weatherproof environment. Wind Loading. Wind loading requirements for the portable sign housing and trailer assembly shall be as specified in Section 3.3.2.1.2 of the NEMA TS-4 standard. Welding. All welding on all major structural components (aluminum or steel) shall be performed by certified welders and in accordance with SAE/AWS D8.8 American Welding Society. Protective Coatings. Protective coatings or processes, such as anodizing, e-coating, powder coat painting, plating, etc., shall be incorporated to protect all sign, cabinet, and trailer metal surfaces from corrosion. Any non-protected metallic fasteners shall be made of stainless steel or aluminum. All components shall be of similar material, or be isolated to reduce galvanic reactions. Temperature and Humidity. Each PCMS shall be designed to operate continuously in extreme ambient temperature ranges and at high humidity levels. Operating ambient temperature range of the portable sign and trailer assembly shall be - 29°F to +165°F. Storage temperature range shall be from -40°F to +185°F. The portable sign shall be capable of continued operation within the operating temperature ranges specified without the need for ac tive systems (i.e., fans). Operating relative humidity level of the portable sign shall be up to 95% non-condensing. Sign Face. Sign face material shall be prot ected by a non-glaring polycarbonate material of at least ¼-inch thickness. It shall be re placeable and manufactured of material rated for outside use and resistant to UV degradation (exposure to the sun). All electronics and pixels shall be protected from damage due to moisture. Sign Housing Construction. The portable si gn housing, including its front face panels, shall be designed to conform to the requirements of minimum NEMA Type 3R, as described in the latest edition of NEMA 250. It shall comply with the latest structural AASHTO requirements. It shall be constructed of aluminum sheeting that shall not be less than 1/8-inch thick with all seams continuously welded by the inert gas process. The front of the sign housing shall have a flat black matte finish. Weep holes shall be provided in the housing to allow moisture from condensation to escape. The sign housing and cabinets shall be designed to keep insects out. The sign housing shall be constructed in such a manner as to prohibit stray light from reducing legibility. All sides of the sign housing shall have a maintenance-free finish. Alignment of the sign housing shall be capable of being horizontally adjusted to position the sign a full 360 degrees. It shall be capable of rotating and locking at any selected horizontal angle up to 360 degrees. A sight alignment tube/device shall be mounted to horizontally position the sign display. A positive brake assembly with lockable control arm shall be provided to position the sign display in the desired position. It shall allow easy access to all components contained within the display housing without the removal of any external parts. Door locks shall be rigidly mounted. Gasketing shall be provided on all door openings and shall be dust-tight, permanently bonded to the door metal, and shall not stick to the mating metal surface. A gasket channel shall be provided to support the gasket on the door. Trailer. Each PCMS trailer shall meet all re quirements for trailers as outlined in Section 3.3.3 of the latest NEMA TS-4 standard as well as the following minimum requirements.

619.02.14 2--Controller to Sign Interface. Each PCMS shall meet all applicable

controller to sign interface requirements as outline in Section 4 of the NEMA TS-4 standard.

619.02.14 3--Display Properties. Each PCMS shall have a cone of vision (viewing angle)

from the center (reference axis) shall be a minimum 15 degrees with the half-power viewing angle defined such that at a given distance from the LED, luminous intensity measured at any point at an angle of 7.5 degr ees from the LED's center axis is no less than half the luminous intensity measured directly on the LED's center axis. The minimum word legibility requirements sh all be 1232 feet or greater under daytime light conditions and within the cone of visions as specified. Legibility is defined as the ability to discern the content of a display using a “word message.” The minimum word legibility requirement shall be documented either by a Department approved independent testing laboratory or by participation in the NTPEP test program. The minimum visibility requirements shall be 3000 feet or greater under daytime light conditions and within the cone of vision as specified. Visibility is defined as the ability to recognize that a display exists. The minimum visibility requirement shall be documented either by a MDOT approved independent testing laboratory or by participation in the NTPEP test program. The PCMS shall be capable of displaying standard fonts and font alphabets as specified in Sections 5.6.1 and 5.6.2.3 of the NEMA TS-4 standard and adhere to NTCIP 1203. The PCMS shall also support moving arrows. Any NTPEP test results shall be for the PCMS model being used and shall be within the last three completed test cycles.

619.02.14 4--Optical Components. The pixels for the PCMS shall be manufactured using

Light Emitting Diodes (LED). Changes to displays shall be performed by turning the LEDs in a pixel either on or off. The discrete LE D shall be an untinted, non-diffused, solid-state lamp that uses Aluminum Indium Gallium Phosphide (AlInGap) technology manufactured by Avago Technologies (formerly Agilent Technologies), Toshiba Corporation, Nichia Corporation, or functional equivalent. Horizontal and vertical spacing between modules shall be such that the horizontal and vertical p itch between all pixels is equal. A failure of one pixel shall not affect the operation of any other pixel. All LEDs used to create a display in a single portable sign shall have a nominally rated LED life of 100,000 hours of operation under field conditions. This shall include operating temperatures between -29°F to +165°F. LED lif e shall be defined as the time it takes for the LED light output to degrade to half of the LED's initial light output. The current through an LED shall be limited to the manufacturer’s recommendation under any conditions. Each LED character module shall be rated for use over the environmental range specified herein, including heat absorption du e to sunlight. The LEDs shall be protected from the outside environmental conditions, including moisture, snow, ice, wind, dust, dirt, and UV rays (UVA and UVB). All LEDs shall be mounted so that they present a uniform and legible display. Pixels shall be replaceable in modular groupin gs (modules). All modules within a sign shall be the same size and interchangeable. The replacement of any module shall be possible with no more than simple non-vendor-specific hand tools, such as screw drivers or wrenches, without any physical modification to the module.

619.02.14 5--PCMS Controller and Storage Cabinets. All PCMS controller and storage

cabinets shall be a minimum of NEMA 3R rate d and be completely encased and lockable with a standard padlock as specified herein. A separate lockable storage cabinet shall be provided to house various accessories. The controller cabinet shall be manufactured to withstand all types of adverse weather conditions and shall be designed and installed to keep insects out. All components inside the controller cabinet shall be accessible without disconnecting any unassociated wires or components. The controller cabinet shall be illumination. The keyboard terminal and control panel shall be housed. Lighted keys and terminal displays are acceptable. All controls in the controller cabinet shall be labeled. The cabinet shall have a voltmeter gauge to indicate the current battery charge status. It shall have an amp gauge to indicate the current/charging status. It will be acceptable to have a display via digital readout on a control console or panel.

619.02.14 6--Electro nics and Electrical. Each PCMS shall meet all applicable electronics

and electrical requirements as outlined in Section 8 of the NEMA TS-4 standard. Sign Controller. The PCMS shall include a local sign controller with firmware. The local control interface shall have a keyboard capable of allowing full programming and control of the PCMS locally. It shall have a separate serial RS-232 or USB connection to allow a laptop computer using the remote control software to communicate directly with the sign controller. Local and remote interfaces shall be password protected to safeguard against unauthorized use. It shall perform and report the following minimum sign diagnostics both through the local interface and Remote Control Subsystem.  LED brightness controls  Sign status  Communications status  Battery voltage  Photocell ambient light level. It shall automatically report a low battery alarm to a remote user through the Remote Control Subsystem. It shall have an alarm for the controller door open and over temperature. It shall store and display both textual and graphical symbols. It shall store a minimum of 20 pre-programmed messages and graphics. It shall display preprogrammed (by manufacturer) MUTCD symbolic messages and standard arrows. It shall schedule predetermined sequences of messages based on a programmed time and date. Each sequence shall display up to four (4) programmed messages (text and/or graphics). It shall display conventional one, two, or three-line messages for display with a choice of a minimum of three font sizes. Character width shall be proportional to the letter type. The one line message font size shall be capable of displaying messages in full size to utilize the maximum area of display. It shall allow for automatic and manual controls to adjust the brightness of the LEDs. Automatic control shall be capable of varying the LED brightness by sensing the ambient light level using photocells. Manual brightness control shall be password protected to safeguard against unauthorized use. It shall display a preprogrammed default message or no message at all, after a power recovery from a power failure. The sign shall shut down its LED display if internal cabinet temperatures reach a level that is determined unsafe by the manufacturer. All communications and power cabling shall be e ither shielded or routed within conduit to minimize potential EMI/RFI effects. Remote Control Subsystem. The PCMS shall be supplied with all the hardware and software necessary to control the PCMS from a remote central station. It shall have a cellular phone and/or modem capable of communication using the Department’s provided cellular service provider. The Contractor shall coordinate with the Department for a cellular service provider. The Contractor shall be responsible for establishing cellular service and providing activated phone number(s) as directed and approved by the Department. The Contractor sh all pay for cellular service for this project until the Final Maintenance Release as documented by the State Construction Engineer at which time it will be turned over to the Department. The cellular service type shall be CDMA/ 1xRTT or GSM/GPRS, as directed by the Department. It shall be capable of supporting connection and remote control, programming and diagnostics via the Internet. The subsystem shall have all necessary hardware such as external antenna, communications cables, and controller interface and NTCIP Sign controller software. The central station software must meet the following minimum requirements:

619.02.14 7--Operational Security. The Contractor shall change the manufacturer’s

default passwords for all levels of access. The passwords for each level of access shall be different. The individual passwords shall be at least eight (8) characters in length, contain both upper and lowercase alphabetic characters (A-Z, a-z), have at least one (1) numerical character (0-9), and have at least one (1) special character (~ !@#$%^&*()_-+=). The passwords shall not 1) spell a word or series of words that can be found in a standard dictionary, 2) spell a word with a number added to the beginning and the end, or 3) be based on any personal information such as user id, family name, pet, birthday, etc. The Contractor shall provide the Project Engineer will a listing of all passwords for each PCMS prior to the PCMS being placed on the projec t. If multiple PCMS are used on a project, they shall each have distinct passwords.

619.02.14 8--Additional Equipment Requirements. When the contract requires the

PCMS to include a speed radar unit, the radar sh all operate in the "K" band, in an "approach only" mode. In conjunction with the radar, the sign shall be capable of displaying the vehicle speeds. The unit shall be programmable to allow the interruption of user-defined messages by the vehicle speed display and/or alternate messages whenever a settable speed threshold is exceeded. The radar unit shall be encased in an aluminum enclosure with a polycarbonate lens, and the metal portion shall receive the same protective coating, priming, and painting as the rest of the sign.

619.02.14 9--System Documentation. For each PCMS, the Contractor shall provide two

619.02.15 Glare Paddles. Glare paddles shall be those listed on the Department's APL".

619.03 Construction Requirements.

619.03.1 General . Traffic control devices shall be furnished and utilized in accordance

with the Traffic Control Plan (TCP) as referenced in Section 618. Upon failure of the Contractor to adequately maintain traffic control devices and safe movement of traffic through the construction zones, the provisi ons of Subsection 105.15 will be invoked.

619.03.2 Temporary Stripe . Temporary stripes are pavement markings, temporary in

nature, that are used to direct traffic from its customary path, to be removed from the pavement course under use for further temporary traffic control, to be covered by the next pavement course and/or to be replaced by permanent stripes. Temporary stripes shall be 4-inch paint or preformed tape as designated on the plans or when not designated, the use of paint or tape will be at the Contractor's option. Temporary stripes on surface treatments shall be paint. All temporary stripe shall be placed in accord ance with the plans and the requirements set out in Section 625, except that alignment of temporary stripe placed on underlying courses shall have a tolerance of four inches in fifty (50) feet from true alignment for skip stripes and edge lines and one inch in fifty (50) feet from true alignment for no-passing stripes and lane lines. When preformed tape is used on the final pavement course for temporary traffic markings, it shall be removed at no additional cost to the State. Temporary paint stripe requiring removal sha ll be removed by carefully controlled blast cleaning, approved grinding or other approved methods in such a manner that the surface to which the stripe is applied will not be unnecessarily marred or damaged. Preformed tape is to be removed in accordance with the manufacturer's recommendations. Temporary paint stripe placed on the final pavement course may be left in place and covered with permanent stripe of the same color provided the temporary stripe has been satisfactorily placed in the prop er location. Under this condition, any remaining temporary paint stripe not covered by the permanent stri pe shall be removed at no additional cost to the State. Painted traffic stripe removed from the final asphalt pavement surface shall be sealed with an approved sealant. The Engineer may wave the sealant requirement when the area to be sealed is insignificant. This sealing operation shall be performed at no additional costs to the State. All temporary pavement markings placed and measured for payment under this section shall include any required removal. Removal of all temporary stripe will not be measured for separate payment. Existing pavement markings conflicting with temporary markings shall be removed. Removal of such materials (paint, tape, marker, etc.) will be measured and payment made under Section 202. When measuring removal of pavement markings for payment, the skips will not be included in the measurement.

619.03.3 Portable Traffic Signals.

619.03.3 1--Installation. The Contractor shall be resp onsible for placing the portable

traffic signal(s) in the approp riate location based as shown in the plans and meeting the MUTCD and ITE standards for visibility to motorists and for safe operation. The Contractor shall be responsible for providing all hardware, software, communications equipment and licenses to operate a complete system. All equipment shall be installed according to the manufacturer's recommendations. The Contractor shall be responsible for transport, setup, configuration, operation and monitoring of the portable traffic signals throughout the entire project. The Engineer shall approve all timing and settings that are used for operation of the signal. It may be necessary to relocate the portable tr affic signals during the project. The cost of the relocation shall be included in the lump sum price bid.

619.03.3 2--Confo rmance / Testing . Each portable traffic signal shall undergo testing to

verify conformance with this specification. The Contractor shall conduct a Project Testing Program as required below. All costs associat ed with the Project Te sting Program shall be included in overall contract prices; no separate payment will be made for any testing.

619.03.3 2.1--Gen eral Requirements . This work shall meet the following general

requirements.

619.03.3 2.2--Portable Traffic Signal Pre-Installation Test (PIT). The Contractor shall

perform PIT on the portable traffic signals units as they arrive from the factory. The goal of the PIT is to verify that the portable traffic signals were not damaged during shipping and that all components are working.

619.03.3 2.3--Portable Traffic Signal Stand Alone Test (SAT). The Contractor's comprehensive SATs for the portable traffic signals shall be completed once the signal has

been location on the site where it will be utilized. The SAT shall be sufficient to demonstrate compliance with all requirements specified herein.

619.03.3 3--System Maintenance and Support. The portable traffic signal(s) shall be

maintained and supported by the Contractor throughout the duration of the project. The Contractor shall provide MDOT with a 24/7 c ontact to respond to any issues and shall be required to respond within two (2) hours to any call from the Engineer or designated representative concerning any request for correc ting any deficiency in the signal system. Equipment damaged or otherwise not functioning shall be repaired or replaced immediately upon notification by MDOT. Sufficient spare parts to repair common components of the portable traffic signal such as heads, controller, load switch, relays, etc. shall be available on site. All equipment installation, service, repair, relocation and removal are the responsibility of the Contractor.

619.03.3 4--Syst em Documentation. For each type signal, the Contractor shall provide

the Engineer with a user manual. The user manual shall include description and samples for all operational functions, software required to operate the signal on site and remotely (if applicable), all wiring diagrams, a parts lists, the signal specifications, maintenance information and schedule, and a trouble-shooting guide.

619.03.4 Reflective Pavement Markers . Reflective pavement markers for construction

zones shall be secured to the pavement by an approved adhesive. The portion of the highway surface to which the marker is to be bonded shall be free of dirt, grease, oil, moisture, loose or unsound layers and any other material that would adversely affect the bond of the adhesive. Clean pavement need not be blast-cleaned unless the surface contains an abnormal amount of asphalt or the surface is contaminated with dirt, grease, oil, or any other material that would adve rsely affect the bond of the adhesive. Necessary cleaning shall be performed by blast cleaning. When a pressure-sensitive pad is used, a primer shall be applied directly to the road surface with a brush or sprayer but is not to be app lied when the ambient temperature is lower than 50°F. No marker shall be installed when the relative humidity of the air is greater than 80 percent or when the pavement is not surface dr y. Traffic shall not be permitted to run over the primed area until after the markers have been installed. After priming, allow one minute for the primer to dry, then peel the release paper from the pressure-sensitive pad and immediately place the marker in the correct position on the prim ed road surface and apply light pressure. Drive slowly over the located marker with one wheel of a truck to help set it in place. Traffic may be allowed immediately. All markers shall be installed in a uniform line, with controls established by the Engineer. The Engineer will establish controls for each line of markers by setting control points at not less than approximately 600-foot intervals on tangents and 50-foot intervals in curves. All additional work necessary to establish intermediate control points and individual marker points shall be performed by the Contractor. On curves, the line of markers on lane lines and edge lines shall follow the normal cu rvature of the curve a nd placement on chords or other variations from the normal curvature will not be permitted, unless specifically shown on the plans or ordered by the Engineer. Reflective markers shall be installed in such a manner that the reflective face of the marker is perpendicular to a line parallel to the road way centerline. No markers shall be installed over longitudinal or transverse joints of the pavement surface. All markers placed out of alignment shall be removed and replaced by a new marker.

619.03.5 Impact Attenuators . Impact attenuators shall be installed and maintained by

experienced workmen familiar with the installation of impact attenuators. Installation shall be in accordance with the recommendations of the manufacturer. Each impact attenuator shall also include one replacement package. A replacement package shall consist of the quantity of materials necessary to repair one hit for every three attenuators in place. The Contractor shall use these parts to maintain the attenuator during the construction period. When it becomes necessary to install a replaceme nt package, the Contractor shall order an additional replacement package to have available for future use. All unused parts and the attenuators shall become the property of the Contractor upon completion of the project.

619.03.6 Temporary Guardrail . Temporary guardrail shall be installed in accordance

with the plans and the applicable provisions of Section 606. The sites where temporary guardrail has been removed shall be restored to their original condition or as provided in the contract documents. Salvage of temporary guardrail designated to become the property of the Department shall be in accordance with Subsection 202.03. 619.03.7--Maintenance of Traffic Signs . All signs, whether placed new or previously used, shall meet the requirements of this spec ification on each inspection. Signs failing to comply with these requirements shall be repl aced at no additional cost to the State.

619.03.8 Snap-Back Delineators . Snap-back delineators shall be installed in accordance

with the manufacturer's recommendations and at the locations shown on the plans or directed by the Engineer. Delin eators that are damaged by traffic to the extent that they are non-functional shall be replaced as quickly as possible.

619.03.9 Portable Median Barrier . Portable median barriers shall be installed in

accordance with the manufacturer’s recommendatio ns. The barriers shall be installed at the locations shown on the plans, or as directed by the Engineer.

619.03.10 Changeable Message Sign. Each changeable message sign shall be installed and continuously operated at the location select ed by the Engineer on State right-of-way.

The Contractor is advised that selected locat ions may be outside the planned limits of the project. The Contractor shall perform all work necessary for preparation of the site selected and approved by the Engineer, to ensure maximum safety and sign visibility for the traveling public and may be required to rem ove any temporary work at a later date as directed by the Engineer. The Contractor w ill also place a minimum of two plastic drums in advance of the sign and one beside the sign as long as it is in use. The Contractor shall be required to move the sign to a new location if directed by the Engineer. The Contractor may be permitted to bring electric power from outside the normal right-of- way for operation of the equipment if the Department determines that the installation operation will not be hazardous to the traveling public. The Contractor will be required to secure a permit from the Department prior to any work by the power company on the right- of-way. The entire cost of providing electrical service, power to op erate the equipment, and removal of the power source from the right-of-way shall be borne by the Contractor. The changeable message sign(s) will remain the property of the Contractor after the Engineer determines that there is no fu rther need for the sign(s) on the project.

619.03.11 Glare Paddles . Glare paddle installation shall consist of furnishing, installing,

maintaining, removing and relocating glare padd les as required. Glare paddles shall be placed atop precast median barriers, or other de vices, at locations shown in the plans, or as directed by the Engineer. The paddles shall be six to nine inches (6" to 9") in width, 24 to 36 inches in height, and spaced a maximum of 24 inches apart. The pa ddles shall be attached to the top of the devices in accordance with manufacturer’s recommendations at a 22 degree angle. A yellow high-intensity reflective strip shall be a ttached vertically to each side of one of the paddles such that the spacing is 10 feet apart. Unless otherwise directed, these strips shall be placed on the edge of the paddle adjacent to traffic. These reflective strips shall be made of 2-inch by 12-inch material conforming to the requirements of Subsection 721.06 of the Standard Specifications. All glare paddles shall be properly maintain ed. Maintenance will include replacement of damaged or missing blades, improper reflectorization, and any other portions of the installation that may fail, for the entire length of time that the paddles are in place. Cleaning of the reflective material shall be accomplis hed by any means that does not damage the paddles and in a manner that is not hazardous to traffic. Cleaning shall be accomplished on an as-needed basis or as ordered by the Engineer. The Contractor shall relocate the glare paddl es as required during construction at no additional cost to the State. After completion of the work, glare paddles and attachments shall remain the property of the Contractor.

619.04 Method of Measurement . Traffic control devices will be measured one time only

by the units indicated. When moved from the original location to other locations, as required by the contract or as directed by the Engineer, traffic control devices will not be measured for additional payment except when the contract includes the pay item, "Remove and Reset". The total pay quan tity for each traffic control devi ce excluding traffic stripe shall not exceed the maximum number of installations in place at any given time during the life of the contract. Unless otherwise pr ovided, replacement of devices will not be measured for payment. Temporary stripe, completed and removed in accordance with the requirements of this Section, will be measured by the mile or by the linear foot, as indicated, from end-to-end of individual stripes. In the case of skip lines, the measurement will include skips. The length used to measure centerline, lane lines and edge stripes will be the horizontal length computed along the stationed control line. Detail traffic stripe will be measured by the linear foot from end-to-end of individual st ripes. Measurement will be made along the surface of each stripe and will exclude nominal skip intervals where specified. Stripes more than four inches in width will be conver ted to equivalent lengths of four-inch stripe. Legend, which is to include railroad markings, pedestrian crosswalks and stop lines, will be measured by the square foot or linear foot. Pay areas of individual letters and symbols will usually be shown on the plans and measured by the square foot. Transverse railroad bands, pedestrian crosswalks and stop lines will generally be measured by the linear foot, and stripes more than four inches in width will be converted to equivalent lengths of four- inch widths. Each impact attenuator installation, includin g one replacement package, will be measured per each installation as shown on the plans. Replacement packages, excluding the package included with the initial attenuator, will be measured per each in accordance with these specifications. Initial snap-back delineators will be measured per each. Replacement will be measured as follows:

619.05 Basis of Payment . Traffic control devices will be paid for at the contract unit

price for the units specified. Devices that have been measured for payment and subsequently require repair or replacemen t will be dropped from payment on future estimates unless satisfactorily repaired or replaced. Payment for devices for which no pay items are contained in the contract will be included in the unit prices of contract items and/or in the lump sum contract price for Maintenance of Traffic. Payment for items required by the Engineer for temporary location of the changeable message sign, and for which pay items are included in the contract, will be made by the individual pay item. No additional payment will be made for working outside the planned indicated project limits. Payment for removal of materials used for site preparation at changeable message sign locations shall be included in the contr act price for Maintenance of Traffic. Portable traffic signals of the type specified will be paid for at the contract unit price per each, which price shall be full compensation for furn ishing, installing, testing, operating, relocating a complete portable traffic signal as required, integration, configuration, and all other materials, equipment, labor, tools and incidentals necessary to complete the work. The prices thus paid shall be full compensation for completing the work. Payment will be made under: 619-A1: Temporary Traffic Stripe, Continuous White, Description * - per linear foot or mile 619-A2: Temporary Traffic Stripe, Continuous Yellow, Description * - per linear foot or mile 619-A3: Temporary Traffic Stripe, Skip White, Description* - per linear foot or mile 619-A4: Temporary Traffic Stripe, Skip Yellow, Description* - per linear foot or mile 619-A5: Temporary Traffic Stripe, Detail, Description* - per linear foot 619-A6: Temporary Traffic Stripe, Legend, Description* - per square foot or linear foot 619-B: Blank 619-C1: Red-Clear Reflective Raised Pavement Marker - per each 619-C2: Two-Way Yellow Reflective Raised Pavement Marker - per each 619-C3: One-Way Clear Reflective Ra ised Pavement Marker - per each 619-C4: One-Way Yellow Reflective Ra ised Pavement Marker - per each 619-C5: Yellow Clear Reflective Rais ed Pavement Marker - per each 619-C6: Red-Clear Reflective High Pe rformance Raised Marker - per each 619-C7: Two-Way Yellow Reflective High Performance Raised Marker - per each 619-C8: One-Way Clear Reflectiv e High Performance Raised Marker - per each 619-C9: One-Way Yellow Reflective High Performance Raised Marker - per each 619-C10: Yellow Clear Refl ective High Performance Raised Marker - per each 619-D1: Standard Roadside Construction Signs, Less than 10 Square Feet - per square foot 619-D2: Standard Roadside Construction Signs, 10 Square Feet or More - per square foot 619-D3: Remove and Reset Signs, All Sizes - per each 619-D4: Directional Signs - per square foot 619-D5: Directional Signs, Overhead, Location - lump sum 619-E1: Flashing Arrow Panel, Type____ - per each 619-E2: Sequencing Chevron Panel, Size - per each 619-E3: Changeable Message Sign ***** - per each 619-F1: ** Median Barrier, *** - per linear foot 619-F2: Remove and Reset ** Median Barrier, *** - per linear foot 619-F3: Delineators, Mounting, Description - per each 619-F4: Snap-Back Delineator - per each 619-F5: Snap-Back Delineator, Replacement - per each 619-G1: Blank 619-G2: Barricades, Type I - per each 619-G3: Barricades, Type II - per each 619-G4: Barricades, Type III, **** - per linear foot 619-G5: Free Standing Plastic Drums - per each 619-G6: Warning Lights, Type A - per each 619-G7: Warning Lights, Type B - per each 619-G8: Warning Lights, Type C - per each 619-H1: Traffic Signal , Location - lump sum 619-H2: Traffic Signal, Portable, Type ___ - per each 619-H3: Hazard Identification Beacons - lump sum 619-J1: Impact Attenuator , Speed Rating - per each 619-J2: Impact Attenuat or, Speed Rating, Replacement Package - per each 619-J3: Remove and Reset Impact Attenuator ***** - per each 619-K1: Installation and Removal of Guardrail, Type____, Class____ - per linear foot 619-K2: Installation and Removal of Guardrail, Type____ Bridge End Section - per each 619-K3: Installation and Removal of Guardrail, Type____ Cable Anchorage - per each 619-K4: Installation and Removal of Guardrail, Terminal End Section - per each 619-L: Glare Paddles - per linear foot * The description for temporary traffic stripe will be shown as "paint" or "tape.” In the case of "tape" the type will also be designated. When the description is not designated, the use of "paint" or "tape" will be at the Contractor's option. ** Indicate Concrete or Portable *** Indicate Speed Rating, Co lor, etc. if applicable **** Indicate if barricade is to remain with “Permanent” ***** Indicate when options are required Section 620 Section 620 SECTION 620 - MOBILIZATION AND REQUISITE WORK

620.01 Description . Mobilization consists of moving all labor, equipment, supplies, and

incidentals to the project site. It also includes all mobilization pre-construction costs that are necessary direct costs to th e project and are of a general nature rather than directly attributable to other pay items. Requisite work consists of the preparation for and the performance of construction necessary as a requisite to the performance of other items of work and the cost of such work when no other provisions are made in th e contract for payment therefore. Such work shall include, but is not limited to, all obliga tions, preparation, construction and all other costs of requisite work for which no compensation is provided in other items of work.

620.02 Blank .

620.03 Blank .

620.04 Method of Measurement .

620.04.1 Mobilization . Measurement for payment will be in accordance with the

following schedule:

620.04.2 Requisite Work . For monthly estimates, the Engineer will estimate the

percentage of requisite work completed. Upon satisfactory completion of all requisite work, measurement will be considered as 100 percent. 620.05--Basis of Payment . Mobilization and requisite work will be paid for at the contract