1063.1 Scope. This specification covers material to be used for temporary traffic control devices.
1063.2 General Requirements. All temporary traffic control devices shall be manufactured as shown on the
plans and as specified, in accordance with MUTCD requirements and shall be NCHRP 350 or MASH 2016 compliant. FHWA Category 1 temporary traffic control devices are not required to be crash tested unless modified. Non MASH 2016 FHWA Category 2 temporary traffic control devices and appurtenances manufactured prior to January 1, 2023 may be used until January 1, 2026. Non MASH 2016 FHWA Category 3 temporary traffic control devices and appurtenances manufactured prior to January 1, 2023 may be used until January 1, 2030. All FHWA Category 2 and Category 3 temporary traffic control devices and appurtenances manufactured after January 1, 2023 shall meet MASH 2016 Test Level 3 crash test requirements. Type F three- loop temporary concrete barrier is required to meet NCHRP 350 requirements regardless of manufacturing date and may be used until January 1, 2030. MASH 2016 FHWA Category 4 temporary traffic control devices should be used when available. Nominal dimensions will be permitted for dimensional lumber where applicable. All temporary traffic control devices shall exhibit good workmanship and shall be free of objectionable marks or defects that affect appearance or serviceability. The brand name or model number shall be permanently identified on each traffic control device.
1063.3 Channelizers. All trim-lines and drum-like channelizers shall be manufactured from a non-metallic
material, pigmented and molded of a Highway Orange color throughout and stabilized against fading by ultraviolet or other light rays by the incorporation of adequate inhibitors. All reflective sheeting for channelizers shall be in accordance with Sec 1042.2.7.3.
1063.3.1 Temporary Tubular Delineators. Temporary tubular delineators shall be a nominal height of 28
inches and manufactured from a non-metallic material, pigmented and molded of a Highway Orange color throughout and stabilized against fading by ultraviolet or other light rays by incorporation of adequate inhibitors. All reflective sheeting for temporary tubular delineators shall be in accordance with Sec 1042.2.7.5.
1063.4 Signs.
1063.4.1 Rigid Signs.
1063.4.1 1 Sign Substrate. All signs shall be fabricated of substrate designed to provide satisfactory structural
rigidity.
1063.4.1 2 Sign Sheeting. All signs shall have a retroreflectorized background. Retroreflective sheeting shall be
in accordance with Sec 1042.2.7.2. Sheeting shall be applied to the sign substrate in accordance with the manufacturer’s recommendations and the surface shall be free of air bubbles, wrinkles or other blemishes as determined by the engineer.
1063.4.2 Roll-up Signs.
1063.4.2 1 Sign Substrate. Sign and overlay blanks shall consist of either white, yellow, fluorescent orange
and/or pink microprismatic retroreflective sheeting sealed to a heavy-duty coated fabric or vinyl material. Color shall be in accordance with applicable requirements of 23 CFR Part 655 Subpart F. The sheeting shall also meet the requirements of ASTM D4956 Type VI, Class 5 as applicable to roll-up sign sheeting for temporary traffic control signage, including the supplemental S2 flexibility and impact resistance requirements for reboundable sheeting. Material shall be submitted by the manufacturer to AASHTO Product Evaluation and Audit Solutions program for a minimum exposure time of six months. Results shall be published by AASHTO Product Evaluation and Audit Solutions program and available for MoDOT review. Data from all AASHTO Product Evaluation and Audit Solutions test decks will be reviewed.
1063.4.2 2 Overlays. Overlays, when used, shall be mechanically fastened to the face of the sign in a manner
that will ensure the overlay remains securely attached. Fasteners shall not detract from the appearance of the sign when the overlay is not in use. Velcro fasteners will not be permitted.
1063.4.2 3 Bracing. Each sign shall have a horizontal and vertical cross brace and at least one anti-kiting device
located near the center of the sign. Cross braces of sufficient cross-section shall be fastened to each other at the midpoints and the ends securely held to the back of the sign by mechanical means. The design shall ensure that the sign remains taut and retains the sign’s intended shape when exposed to normal field conditions.
1063.4.3 Legend and Borders. Legends and borders of all signs shall be vinyl or silk-screened. Vinyl shall be
cut by die or a computer-driven cutter. Stencil ink used shall be in accordance with the sheeting manufacturer’s recommendations. Free-hand legend and borders will not be permitted.
1063.4.4 Sign Layout and Design. Sign layout and design shall be as shown on the plans or as directed by the
engineer.
1063.5 Sequential Flashing Warning Lights. Sequential flashing warning lights shall meet the following
requirements:
a.Number of lens directional faces: 1.
b.Flashing rate per minute: 55 to 75.
c.Hours of operation: 24 hours per day.
1063.6 Flashing Arrow Panels. All lamps shall have a nominal 5-inch, 360-degree tunnel visor. A lamp on the
back side of the flashing arrow panel shall be continuously energized during operation of the flashing arrow panel. Lamps shall be visible at an angle of 15 degrees to the left and right of center and 4 degrees above and below center during “on” time. The flashing arrow panel shall contain a device to align the arrow panel to oncoming traffic. Arrow panels shall be capable of displaying the flashing arrow, flashing double arrow and four corner flashing caution modes. Solar-powered flashing arrow panels shall be capable of operating in the flashing arrow mode for 20 consecutive days and shall be provided with a device to indicate the remaining charge in batteries.
1063.6.1 Trailer-Mounted Flashing Arrow Panels. Trailer-mounted flashing arrow panels shall be MUTCD,
Type C. Trailer-mounted flashing arrow panels shall be solar powered.
1063.6.2 Truck-Mounted Flashing Arrow Panels. Truck-mounted flashing arrow panels shall be MUTCD,
Type B.
1063.7 Changeable Message Sign. Each portable Changeable Message Sign (CMS) shall consist of a message
board, solar power supply, control systems and mounting and transporting equipment. The unit shall be assembled to form a complete self-contained CMS that can be delivered to the job site and placed into immediate operation. The sign unit shall be capable of operating at an ambient air temperature of -20 to 120 degrees F. and shall not be affected by two-way radio transmissions other than those required to control the CMS. A CMS shall be permanently mounted on a trailer, truck bed, or truck cab per manufacturer’s recommendations. The CMS must be securely mounted on the support vehicle such that it should remain attached during an impact to the vehicle. If it is mounted on a trailer, the trailer must be capable of being leveled and plumbed. CMS trailers should be delineated on a permanent basis by affixing retroreflective material, per Sec 1042.2.7 in a continuous line on the face of the trailer as to be seen by oncoming road users.
1063.7.1 Message Board. The CMS shall be equipped with a power source and battery back-up to provide
continuous operation when failure of the primary power source occurs. Either message board shall be capable to provide three lines of eight individual changeable characters per line. Each character shall be yellow in display on a black background and be a minimum of 18-inches in height. CMS used on roadways with speed limits of 55 mph or higher should be visible from ½ mile under both day and night conditions. The message should be designed to be legible from a minimum of 600 ft. for nighttime conditions and 800 ft. for normal daylight conditions. When environmental conditions that reduce visibility and legibility are present, or when the legibility distances stated in the previous sentences in this paragraph cannot be practically achieved, messages composed of fewer units of information should be used and consideration should be given to limiting the message to a single phase.
1063.7.1 1 The CMS shall have a control system to allow the message to be changed from the CMS location.
The control system shall include a display screen upon which messages can be reviewed before being displayed on the sign and a variable display rate that allows the operator to match the information display to the speed of the approaching traffic. For on-site operation, the CMS shall have a removable waterproof keyboard with display panel that allows the operator to generate an unlimited number of additional messages in addition to the preprogrammed stored messages. The keyboard must be equipped with a security lockout feature to prevent unauthorized use of the controller.
1063.7.2 Changeable Message Sign with Communication Interface. The CMS with communication interface
shall have a digital cellular transceiver capable of receiving a message in the location deployed from a remote location and forwarding the message to the CMS controller to change the displayed message.
1063.7.3 Solar Power Supply. The CMS shall be equipped with a power source and battery back-up to provide
continuous operation when failure of the primary power source occurs.
1063.8 Portable Traffic Signals. Each portable traffic signal (PTS) system shall consist of two trailer-mounted
PTS units, a controller assembly and communication link. Each PTS unit shall consist of signal heads and indications, a solar power supply, vehicle detection and mounting and transporting equipment. All components shall be capable of operating in a temperature range of -20 to 120 F.
1063.8.1 Controller Assembly. The controller assembly shall be a minimum two-phase, solid-state traffic signal
controller with a conflict monitor capable of operating the signals in accordance with MUTCD requirements and NEMA Standard TS1. The controller shall operate as a fully-actuated unit and shall have the capability of being manually operated to display simultaneous red on both phases. The controller shall be capable of red rest during non-actuated periods. Upon detection of a conflict, the system shall change to a solid red clearance interval followed by flashing red.
1063.8.2 Communication Link. A continuous communications link between the PTS units shall be provided. If
a break in communications between the PTS units occurs, the system shall change to a solid red clearance interval followed by flashing red. Upon restoration of communications, the system shall change to a solid red clearance interval followed by normal operations.
1063.8.3 Signal Heads and Indications. Each unit shall consist of two polycarbonate signal heads, including
backplates and visors. One signal head shall be mounted on the mast arm assembly and the other on the vertical upright. The signal head mounted on the mast arm shall provide a minimum lateral clearance of 9.5 feet from the center of the outer signal head to the edge of the trailer and a minimum vertical clearance of 16 feet from the bottom of the backplate to the roadway surface. The signal head mounted on the vertical upright shall provide a minimum clearance of 8 feet from the bottom of the backplate to the roadway surface. All signal indications shall be 12 inches in diameter. Traffic signal heads and indications shall be in accordance with the vehicle traffic control signal head requirements of ITE and NEMA Standard TS1 and TS2.
1063.8.4 Solar Power Supply. The power supply shall use a battery bank with sufficient capacity to operate the
PTS for 20 consecutive days with no sun. All terminals and connections shall be clearly labeled.
1063.8.5 Vehicle Detection. Detection shall be provided by one of the non-intrusive vehicular detection
methods specified in Sec 902 or temporary loop detectors with the capability of providing coverage for a 6-foot x 30-foot area. Temporary loops shall be preformed at the factory. The temporary loops shall have self-adhesive rubberized asphalt backing, which shall bond to the pavement.
1063.8.6 Support. A factory trained service representative shall be available at the delivery location to provide
technical assistance and training, including the installation and operation of software. No additional payment will be made for travel expenses.
1063.9 Portable Signal Flagging Device. Each portable signal flagging device (PSFD) system shall consist of
four portable cart-mounted units. Each PSFD unit shall provide a vertical upright with one signal head, vehicle detection, radio controller, and self-contained power supply capable of operating the unit for 16 continuous hours. All components shall be capable of operating in a temperature range of –20 to 120 F.
1063.9.1 Signal Heads and Indications. The signal head shall consist of three (red ball, amber ball, green ball)
12-inch LED signal indications. All signal heads shall be mounted on the vertical uprights with a minimum clearance of 7 feet when the upright is fully extended.
1063.9.2 Vehicle Detection. Detection shall be provided by one of the non-intrusive vehicular detection
methods specified in Sec 902 with the capability of providing coverage for a 6-foot x 30-foot area.
1063.9.3 System Operation. The system shall be able to operate in a fixed-time, traffic-actuated, and manual-
control mode. The system shall be MUTCD compliant with a controller and conflict monitor and include a wireless radio communication package and wireless remote.
1063.10 Radar Speed Advisory System. Each radar speed advisory system shall consist of a radar unit, speed
display, speed limit display, solar power supply and mounting and transporting equipment.
1063.10.1 Radar Unit. The radar unit shall include necessary cables for connection to the digital display and
power supply, shall be capable of instantaneously displaying and locking readings and shall meet the following minimum requirements: Radar Unit Requirements Speed range 15 to 99 mph Accuracy ±1 mph Internal test 32 mph check
1063.10.2 Speed Display. The speed display shall be a minimum of 12 inches high and shall be capable of
displaying the radar unit output from 0 to 99 mph.
1063.10.3 Speed Limit Display. The speed limit display shall indicate the work zone speed limit by means of a
36 x 48-inch speed limit sign. The speed limit sign may be comprised of a rigid or roll-up sign or a rigid sign with a variable speed display. The variable speed display shall be a minimum of 12 inches high and shall be capable of displaying two digits.
1063.10.4 Solar Power Supply. The power supply shall be capable of operating the radar unit, speed display
and speed limit display, if applicable, for a minimum of eight hours per day.
1063.11 Truck or Trailer Mounted Attenuators. Each TMA shall have a standard trailer lighting system,
including brake lights, taillights, turn signal lights and Federal Motor Carrier Safety Administration identification bar lights. In the operating position, the rear facing of the TMA shall be marked with alternating 8- inch yellow and 8-inch black retroreflective sheeting forming an inverted “V” at the center and slope downward at an angle of 45 degrees toward each side of the unit or a checkered board pattern consisting of 12-inch square red and 12-inch square white retroreflective sheeting. The TMA may be marked with the same operating pattern or red and white DOT conspicuity tape to simulate the looks of a standard van body trailer when traveling. The TMA shall have the same standard trailer lighting system noted above when the unit is in the transport position.
1063.12 Certification. The contractor shall furnish a manufacturer's certification for all material governed by
this specification. The certification shall indicate full compliance with each applicable specification.
Temporary Traffic Control Devices in other states
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Source: Missouri Standard Specifications for Highway Construction, 2026 (Oct) Edition. Pages 725–728 of 874. View official source ↗