984 Page 570984 TEMPORARY TRAFFIC CONTROL DEVICES
984.1GENERAL
Temporary traffic control devices, including signs, drums, cones, tubular markers, barricades, vertical panels, and direction indicator barricades will be reflectorized with sheeting applied to a satisfactory backing. All fluorescent orange background material on traffic control signs, all temporary delineators, and all temporary STOP (R1-1), YIELD (R1-2), DO NOT ENTER (R5-1), and WRONG WAY (R5-1a) signs will conform to the requirements of ASTM D4956 Type IX or XI. All other traffic control signs and background colors will conform to the requirements of ASTM D4956 Type IV. For barricades, vertical panels, and direction indicator barricades; the reflective sheeting will meet or exceed the standards of Type IV as defined by ASTM D4956. Round surfaced temporary traffic control devices including, but not limited to; drums, cones, and tubular markers will be reflectorized with reflectorized sheeting meeting or exceeding the standards of Type IV as defined by ASTM D4956. All orange colored material will be fluorescent.
984.2FABRICATION
A.Background Color: The background color will be as specified in Part 6 of the MUTCD. B.Legend: Message and borders will be non-removable copy of the color specified in Part 6 of the MUTCD. The non-removable copy may be screened processed or direct applied. Mounting holes will not be drilled or punched in any part of the non-removable copy. 1.Screened Process : Message borders will be processed on reflective sheeting using mechanical equipment, materials, and operational methods and procedures as prescribed by the manufacturer. Processing will be accomplished by the direct or reverse screen method using opaque or transparent processing material. Screening may be accomplished either before or after application of the sheeting to the base panels. Free hand painting will not be permitted on any part of the finished sign face. 2.Direct Applied : Cut out message and borders will be reflective sheeting or opaque lettering film applied directly to clean, dust free, reflective sheeting background. Message and borders will be in accordance with the operational methods and procedures prescribed by the sheeting manufacturer. The finished letters, numerals, symbols, and borders will be cut with smooth, regular outline, and free from ragged or torn edges.
984.3TRAFFIC CONTROL DEVICE STANDARDS
A.Warning Lights: Warning lights will be portable with lens directed enclosed lights. The lens of the unit will not be less than 7 inches in diameter and will be amber in color. They may be used in either the steady burn or flashing mode. Warning lights will be in accordance with the requirements of Equipment and Materials Standards of the Institute of Transportation Engineers (ITE) Publication No. ST 017, Purchase Specification for Flashing and Steady-Burn Warning Lights. The lights will be certified by the manufacturer. The use of the warning lights will be in accordance with Part 6 of the MUTCD. 984 Page 571B.Channelizing Devices: Channelizing devices, including cones, barricades, tubular markers, vertical panels, directional indicator barricades, and drums will conform to the requirements of Part 6 of the MUTCD. Drums will be of a two part construction with breakaway bases. Cones will be a minimum of 42 inches in height. C.Temporary Sign Supports: Construction sign supports will meet the crashworthy requirements of test level 3 of National Cooperative Highway Research Program (NCHRP) Report 350 or AASHTO Manual for Assessing Safety Hardware (MASH) and will conform to the height requirements of the MUTCD. D.Pilot Car: Pilot cars will be a passenger car, multipurpose passenger vehicle, or pickup truck. E.Temporary Pavement Marking Tape: Temporary pavement marking tape, Types I and II, will conform to the requirements of ASTM D4592. The film, without adhesive, will have a minimum thickness of 39 mils. F.Temporary Raised Pavement Markers: Temporary raised pavement markers will consist of a yellow or white plastic body providing a horizontal width and length of approximately 4 inches in both dimensions and approximately 3/4 inch high. The adhesive will be resistant to the effects of weather and capable of retaining the marker in position during the time it is required to function. The markers will consist of a methyl methacrylate, polycarbonate, polystyrene, or suitably compounded acrylonitrile butadiene (ABS) shell fitted with retroreflective lenses. The exterior surface will be smooth. The marker reflector will have a minimum coefficient of (retroreflected) luminous intensity conforming to Table 1. G.Flexible Vertical Markers (Tabs): Flexible vertical markers (tabs) will consist of a yellow or white plastic body providing a horizontal width of approximately 4 inches and approximately 2 inches high. A strip of retroreflective tape 1/4 inch minimum width will be bonded horizontally along the top of the vertical area. The adhesive will be resistant to the effects of weather and capable of retaining the marker in position during the time it is required to function. The marker reflector will have a minimum coefficient of (retroreflected) luminous intensity conforming to Table 1. 984 Page 572Table 1 Minimum Coefficient of (Retroreflected) Luminous Intensity in Millicandelas per lux or (Candelas per footcandle) Observation Angle in Radians (Degrees)Entrance Angle in Radians (Degrees)Luminous Intensity for Each Color in Millicandelas per lux (Candelas per footcandle) White Yellow Red 0.0035 0.0 279 167 70 (0.2˚) (0˚) (3.0) (1.8) (0.75) 0.0035 0.349 112 67 28 (0.2˚) (20˚) (1.2) (0.72) (0.3) Note: The retroreflective tape will be acrylic backed metalized polycarbonate microprism film, molded methyl methacrylate, or approved equal. 985 Page 573985 TRAFFIC SIGNALS AND ROADWAY LIGHTING
985.1REQUIREMENTS
Prior to fabrication, the Contractor will submit shop plans or catalog cuts for all signal equipment and luminaires to the Department for the Department’s opportunity for review. Any review by the Department of the shop plans or catalog cuts is limited to general conformance with the contract plans and specifications only. The Contractor will send an email with the shop plans or catalog cuts attached as a PDF to the Project Engineer and Office of Road Design. Upon request, the Project Engineer will provide the Contractor the appropriate email addresses. Within 14 calendar days of receiving the shop plans or catalog cuts, the Office of Road Design will respond to the Contractor in one of the following ways: 1) No Exceptions Noted; 2) Returned for Revision; or 3) Not Required for Review. If the Department’s response states, “Returned for Revision”, the Contractor must make the revisions and resubmit the shop plans or catalog cuts for review as specified above. The Contractor will not begin fabrication or construction of the work contained in the shop plans or catalog cuts until the Department has confirmed, in writing, a completed review with a response of “No Exceptions Noted” or “Not Required for Review”. A.Electrical Grounding and Bonding: 1.Grounding Wire: Grounding wire from electrical cabinets to the ground rod will be bare, soft drawn copper, size per NEC. Grounding wire from pole to ground rod will be bare, soft drawn copper, minimum size #6 AWG. 2.Bonding Conductors: Bonding conductors will be of the same size and insulation grade as the associated circuit conductors. Equipment grounding conductors will be sized in compliance with the NEC. 3.Ground Rods: Ground rods will be copper-coated electrodes in accordance with Underwriters Laboratory (UL). The size and length will conform to NEC requirements. B.Conduit: 1.Rigid Steel Conduit: Conduit and fittings will meet the requirements of UL 6 and 514 and will be hot dip galvanized. Each section of conduit will bear the UL label. 2.Rigid Nonmetallic Conduit: Conduit and fittings will be polyvinyl chloride heavy wall meeting the requirements of UL 651 and 514. Use and installation of polyvinyl chloride (PVC) schedule 40 and 80 will be in accordance with NEC and each section will bear the UL label. The Contractor will use schedule 80 nonmetallic conduit under all roadways and other locations as shown in the plans. 3.Innerduct Conduit: Innerduct conduit will be Schedule 40 HDPE. Innerduct conduit will provide 1 inch nominal duct size, be orange in color, and be longitudinally ribbed on the inside wall. C.Junction Boxes: Surface mounted junction boxes will comply with NEMA 4X stainless steel, will be UL-listed, and, at a minimum, will be sized according to the NEC. Stainless steel junction boxes will have the cover held in place with a continuous hinge and kept closed with screws and clamps on the remaining three sides. The cover will be removable by removing