SECTION 702: CONSTRUCTION TRAFFIC CONTROL DEVICES
702.1 Description
This Work consists of providing and installing construction tra ffic control devices.
702.2 Materials
702.2.1 Construction Signing
The Contractor shall provide si gn substrate sufficiently durabl e to last the Project duration and rigid enough to hold the sheeting flat. The Contractor shall provide Materials in accordance with Secti on 701.2.4.1, “Retroreflective Sheeting;” Se ction 701.2.4.2, “Sign Legends an d Sheeting;” and Section 701.2.4.3, “Sign Backgrounds.” The Contractor shall provide Type VIII or greater retroreflecti ve sheeting for construction signing, flagger paddle, drums, cones, and channelization devic es for legends and sign backgrounds, unless otherwise specified in the Contract. The Contractor shall use black letters on a reflective fluoresc ent orange background for construction signing, unless ot herwise specified in the Contrac t. The Contractor shall provide Type XI or greater intensity retro reflective sheeting for background of regulatory signs.
702.2.1 1 Steel Posts and Base Posts for Construction Signing
The Contractor shall provide steel post and base post Material in accordance with Section 701.2.6, “Sign Structures and Hardware.”
702.2.1 2 Portable Sign Supports
The Contractor shall provide portable sign supports in accordan ce with the MUTCD, current edition and the Department’s Approved Products List .
702.2.2 Barricades and Channelization Devices
The Contractor shall provide tra ffic control devices in accorda nce with the Department’s Approved Products List for barricades and channelizati on devices, available from the State Maintenance Bureau. Suppliers proposing traffic cont rol devices for inclusion on th e Department's Approved Products List must submit product certificat ions for approval. The Departme nt will review and approve or deny the proposed certifications within 30 Days. Unless stated otherwise, the Contractor shall submit, to the Pr oject Manager, certification from the manufacturer stating that the traffic control devices proposed for use are in accordance with NCHRP Report 350 and/or MASH . The Contractor shall submit certification showing that the proposed traffi c control devices are listed on the Department's Approved Products List . The Contractor shall use traffi c control devices from the follo wing categories: Section 702: Construction Traffic Control Devices Page 768 1. Category I Traffic Control Devices. Low mass, single piece traffic cones; tubular markers; pedestrian devices; singl e-piece drums; delineators; or similar devices without lights or signs. 2. Category II Traffic Control Devices. Vertical panels; Type I, II, and III barricades; temporary ADA pedestrian devices ; moveable skid mounted sign st ands; or similar devices.
702.2.2 1 Barricades
The Contractor shall use reflectorized barricades with orange a nd white retroreflective sheeting or recording in accordance with the MUTCD, current edition and Table 701.2.4.1.2:1, “Type IV Sheeting - Unmetallized Microprismatic Element,” and T able 701.2.4.1.2:2, “Type VIII
F.Sheeting - Fluorescen t Microprismatic Lens.”
702.2.2 2 Vertical Panels
The Contractor shall use reflectorized vertical panels with ora nge and white retroreflective sheeting or recording in accordance with the MUTCD, current edition and Table 701.2.4.1.2:1, “Type IV Sheeting - Unmetallized Micropris matic Element,” and Table 701.2.4.1.2:2, “Type VIII F Sheeting - Fluorescent Microp rismatic Lens.”
702.2.2 3 Traffic Markers
The Contractor shall provide traffic marker Materials in accord ance with Section 703, “Traffic Markers.”
702.2.2 4 Drums
The Contractor shall provide non- metal drums in accordance with the MUTCD, current edition and as approved by the Project Manager. The Contractor shall use only one (1) size drum on the Project. The Contractor shall use reflecto rized drums with fluorescent o range and white high- performance retroreflective sheeting or recording. The Contrac tor shall use horizontal, circumferential, fluorescent or ange and white reflectorized str ipes from four (4) inches to six
6.inches wide for drum marking. The Contractor shall ensure the number of alternating fluorescent orange and white refl ectorized stripes and the amou nt of non-reflective drum surface space is in accordance with the MUTCD, current edition . The Contractor shall provide drums that are a minimum 36 inches high and 18 inches diameter with a closed top, and either a sand-ballasted, prefor med rubberized, or tire sidewall- collared base, in accordance with the manufacturer’s recommenda tions.
702.2.2 4.1 Warning Lights
The Contractor shall provide either Type “A” low intensity, Typ e “B” high intensity, or Type “C” steady-burn warning lights in accordance with the MUTC D, current edition.
702.2.2 4.2 Flexible High-Performance Reflective Sheeting
The Contractor shall provide retroreflective sheeting and adhes ive Materials in accordance with Section 701, “Traffic Signs and Sign Structures ,” except provide Type VIII or greater intensity retroreflective sheeting. Section 702: Construction Traffic Control Devices Page 769 The Contractor shall provide sheeting with a pre-coated adhesiv e protected by a removable liner. The Contractor shall apply to channelization devices in accordance with manufacturer’s recommendations.
702.2.2 4.2.1 Sheeting Flexibility
The Contractor shall use sheeting that does not exhibit crackin g when bent around a 1/8 inch mandrel in one (1) second, after conditioning for 24 h at 32 °F with the liner removed. The Contractor shall test by spreading talcum powder on adhesiv e and bending with the adhesive side contacting the mandrel.
702.2.2 4.2.2 Adhesive
The Contractor shall provide pr essure sensitive adhesives for u se on substrates, other than plasticized PVC, in accor dance with Section 701.2.4.1, “Re troreflective Sheeting.”
702.2.2 4.2.3 Adhesive Backing Testing
The Contractor shall test pressure sensitive adhesive backing o n flexible high performance sheeting in accordanc e with FHWA Standard Specifica tions for Construction of Roads and Bridges on Federal Highway Projects (FP-96), Section 718. Backing adhesive must support a 1 3/4 lb weight for five (5) min without peeling away more than one (1) inch if applied to a smooth aluminum surface.
702.2.2 4.2.4 Reflectivity
The Contractor shall provide flexible high-performance sheeting that meets or exceeds the minimum reflectivity requirements in Table 701.2.4.1.2:1, “ Type IV Sheeting – Unmetallized Microprismatic Element,” and Table 701.2.4.1.2:2, “Type VIII F Sheeting - Fluorescent Microprismatic Lens.”
702.2.2 5 Traffic Cones
The Contractor shall provide traffic cones in accordance with t he MUTCD, current edition and having a flexible cone (above the base) with an outer secti on made of a highly pigmented fluorescent orange polyvinyl compound. The Contractor shall provide cones at least 28 inches tall weig hing at least ten (10) lb with a base alone weighing seven (7) lb, with a distribution of cone weight effectively holding the traffic cones uprigh t under traffic conditions. If approved by the Project Manager, the Contractor shall use tu bular traffic markers manufactured, installed, and maintained in accordance with Sect ion 703, “Traffic Markers,” instead of traffic cones.
702.2.3 Sequential Arrow Displays
The Contractor shall use a sequential arrow display consisting of a sign panel assembly and a power source. The Contractor shall mount the display on a two (2)-wheeled trailer or on a vehicle for mobile operations . The Contractor shall provide a sequential arrow display in accordance with the MUTCD, current edition Specifications for arrow displays. The Contractor shall use Type B panels for mobile operations and Type C panels for stationary traffic control. The Contractor shall provide a trailer in accordance with Secti on 702.2.4.5, “Trailer.” The Contractor shall provide a display powered by diesel or solar p ower or one that connects to an external power supply. The Contractor shall ensure electrical connections meet or exceed the Section 702: Construction Traffic Control Devices Page 770 applicable electrical code requirements. The Contractor shall provide solar-powered systems with a battery-backup power supply capable of maintaining opera tion for a minimum of 12 consecutive 24-hour Days.
702.2.3 1 Operating Modes
The Contractor shall ensure that displays are capable of the fo llowing operating modes (see the MUTCD, current edition Specifications for advance warning arrow display): 1. Pass Left - Three (3) chevrons of five (5) lamps each sequen cing right-to-left; 2. Pass Right - Three (3) chevr ons of five (5) lamps each seque ncing left-to-right; 3. Pass Either Side - Two (2) outermost chevrons on each end of the panel pointing outward forming arrowheads with crossing lamp rows burning cont inuously. Do not burn the first lamp directly behind the point of each arrow, to define the arrow points; and 4. Caution - Four (4) lamps, one (1) at each corner of the pane l.
702.2.4 Portable Changeable Message Signs
Portable changeable message signs will consist of a sign panel assembly, controller, power supply, and structural support system mounted on a two (2 )-wheeled trailer. The Contractor shall supply new portable changeable message signs i f the Contract specifies that the Department will retain the message signs upon Final Accepta nce.
702.2.4 1 Sign Panel Assembly
The Contractor shall provide a sign panel consisting of a three (3)-line panel assembly. The Contractor shall ensure that each line contains eight (8) m atrices capable of producing at least eight (8) individually c hangeable characters. The Contra ctor shall ensure that each character module uses, as a minim um, a five (5)-wide pixel by s even (7)-high pixel matrix, with each matrix measuring at least 18 inches high and nine (9) inch es wide. The Contractor shall ensure a clearly displayed message on the sign panel that is legible from a distance of 800 ft during daytime and nighttime operatio n at angles in accordance with the MUTCD, current edition Specifications for porta ble changeable message signs.
702.2.4 2 Controller
The Contractor shall provide a compact controller located to al low easy access to sign and message functions from a control cabinet on the trailer. The Contractor shall provide a solid-state unit controller capa ble of generating and storing sign messages. The Contractor shall provide a controller keyboard that allows the user to recall and use messages from permanent memory storage containing a library of standard messages. The controller will also have the capacity to store, recall, and us e at least 50 additional messages generated by the operator. The Contractor shall use a controller with a protective device that requires an entry code to access the memory and display messages to prevent unauthoriz ed programming.
702.2.4 3 Power Supply
Section 702: Construction Traffic Control Devices Page 771 The Contractor shall provide a power unit capable of powering t he message sign continuously for at least 21 cons ecutive 24-hour Days, with a f ail-safe backup power supply system, and capable of being powered directly by a 120 V AC ext ernal power supply.
702.2.4 4 Structural Support Systems
The Contractor shall provide a structural support system with a mechanism capable of raising and lowering the sign pa nel at sustained wind speeds of 55 mph, and capable of operation by one (1) person without use of heavy Equipment. Th e Contractor shall ensure a clearance of at least seven (7) ft between the sign panel botto m and the pavement surface, when fully raised.
702.2.4 5 Trailer
The Contractor shall use a two (2) -wheel single-axle system tr ailer with a suspension rated at no less than 2,000 lb. The Contractor shall provide a trailer equipped with the follow ing: 1. Four (4) non-removable leveling jacks, one (1) at each corne r of the trailer, 2. A tongue and either a towing eye, for use with the pintle ho ok, or a ball receptacle, for a ball-type trailer hitch. F abricate a 2 1/2 inches inside diameter towing eye from one (1) inch round, solid steel. Size the ball receptacle to a ccept a standard two
2.inch ball; 3. Two (2) safety chains with 1/4 inch diameter links. Install one (1) chain on each side of the draw bar and extend 24 inches beyond the towing eye. In stall a safety hook on the outer end of each chain; 4. Two (2) combination tail, turn, and stop lights; 5. A license plate bracket and illumination lamp; 6. A standard SAE seven (7)-way trailer light wire connector on a cable extending 24 inches beyond the towing eye; and 7. A means of securing a receptacle on the trailer tongue.
702.2.5 Temporary Signal Span
The Contractor shall provide pol es and associated electrical it ems for temporary signal spans in accordance with Secti on 715, “Beacons and Temporary Si gnal Equipment.”
702.3 CONSTRUCTION REQUIREMENTS 702.3.1 General
The Contractor shall provide co nstruction traffic control devic es in accordance with MUTCD, current edition and NCHRP Report 350 . Construction traffic control devices shall remain the property of the Contractor, unless otherwise specifi ed in the Contract. The Contractor shall install signs, steel posts, and base posts in accordance with the requirements of Section 701, “Traffic Signs and Sign Structures .” The Contractor shall provide drums equipped with Type “C” steady-burn warning lights on chan nelization recordings, if in night operation. The Contractor shall install tr affic markers in accordance with the requirements of Section 703, “Traffic Markers.” The Contractor shall use Type A or Type B flashing warning ligh ts and flags to call attention to advance warning construction signing. The Contractor shall use Traffic Cones only during daylight hou rs. The Contractor shall completely cover all conflicting signs wit hin or in advance of the Work zone with an opaque non-light transmitting Material so as not to damage the sign. Failure to adhere to this requirement will result in the Contra ctor replacing the sign at no cost to the Department.
702.3.1 1 Portable Sign Support System
Portable sign stands for rigid signs must be capable of accomm odating rigid signs, 30 in. X 30 in. to 48 in. X 48 in. Unit must be transportable as a se cure unit. Base shall be adequate to support the stand and signs without bending and to be light weight. Retaining brackets shall be provided to adequately secure the sign to the portable sign support.
702.3.1 2 Temporary Signal Spans
The Contractor shall use temporary signal spans consisting of p oles and associated electrical items in accordance with Section 715, “Beacons and T emporary Signal Equipment.” The Contractor shall remove temporary signal spans after Projec t Detours are removed, or as directed by the Project Manager.
702.3.2 Maintenance
The Contractor shall maintain the traffic control plan and devi ces in accordance with Section 618, “Traffic Control Management.” The Contractor shall keep constr uction traffic control devices clean so that the intended visibility is not diminished. The condition of construction tr affic control devices is subject to Department approval.
702.4 METHOD OF MEASUREMENT—Reserved
702.5 Basis of Payment
Pay Item Pay Unit Construction Signing Square Foot Steel Posts and Base Posts for Construction Signing Linear Foot Barricade, Type_____ Each Vertical Panel, Type_____ Each Construction Traffic Marker Each Portable Sign Support Each Channelization Device, Type_____ Each Sequential Arrow Display Each Portable Changeable Message Sign Each Traffic Cone Each Temporary Signal Span Lump Sum
702.5.1 Work Included in Payment
The following Work and items will be considered as included in the payment for the main items and will not be measured or paid for separately: 1. Supports required for vertical panels and poles, and all ass ociated electrical and mechanical items for temporary signal span; 2. Moving of construction traffi c control devices from one (1) location to another, maintenance, and repair or replacement of damaged or destroyed traffic control devices; 3. Additional traffic control device quantities approved and im plemented solely for the Contractor's convenience; 4. Type “A” low-intensity warning lights, Type “B” high-intensi ty warning lights, or Type “C” steady-burn warning lights and signing which are attached t o barricades, drums and construction signs; 5. Removal of signs and devices as well as all other items asso ciated with and required for installation or func tion of devices used for const ruction traffic control devices; 6. Covering all conflicting signs within or in advance of the W ork zone with an opaque non-light transmitting Material; and 7. In the event of a Compensable Delay, the devices owned by th e Contractor are not eligible for additional compensation. Devices leased by the Co ntractor may be eligible for additional compensati on based on actual costs incu rred. Section 703: Traffic Markers Page 774
Source: New Mexico Standard Specifications for Highway and Bridge Construction, 2019 Edition. Pages 0–0 of 974.