650-1 Description.
Furnish and i nstall vehicular traffic signal assemblies as shown in the Plans and Standard Plans. For additional requirements rel ated to mounting and attaching the assemblies , see Section 659.
650-2 Materials.
Use vehicular signal assemblies that meet the requirements of Section 995 and are listed on the Department’s Approved Product List (APL). Vehicular traffic signal assemblies must meet the requirements of Section 603 and the I nstitute of Transportation Engineers (ITE) Standard for Vehicle Traffic Control Signal Heads. Provide vehicular traffic signal assemblies as a complete and functioning unit. Components include, but are not limited to, signal housing, light emitting diode (LED) signal modules, visors, backplates, and assembly hardware. All sections of multi -section assemblies must be from the same manufacturer.
650-3 Installation.
650-3.1 Preassembly: Pre-assemble the signal heads when more than one signal section
is required prior to installation at the site. Furnish signal heads with LED modules, backplates, and visors. Use tunnel visors unless otherwise specified in the Contract Documents. Install the LED circular module in the door so that the UP arrow or the word UP o r TOP is in the up orientation of the signal housing. Install the LED arrow modules in the signal housing door in the direction of the intended use.
650-3.2 Positioning of Signals: Consider the locations of the installed signals as shown
in the Plans as sufficiently flexible as to allow for unanticipated field conditions at the site. The Engineer will direct any variations from the locations shown. Position adjacent signal faces no closer than 8 feet apart measured horizontally at 90 degrees to the traffic flow between centers of faces. Regardless of the results of any scaled dimensions, consider the location shown in the Plans to be approximate. Position a signal face mounted on a span wire or mast arm as near as practical to the line of the driver’s nor mal view. Ensure that all sections are of the same manufacturer and the section assemblies are uniform in appearance and alignment.
650-3.3 Clearances: Unless directed otherwise by the Engineer for unusual
circumstances at the site, provide a vertical c learance of not less than 17 feet-6 inches and not more than 19 feet for traffic signals placed over the roadway. Measure such clearance for each span directly under the most critical signal assembly (in regards to clearance) for that span. Place signal assemblies on each span as near as practical to the same elevation as the critical signal assembly. Ensure that the lowest point on pedestal -mounted and side -mounted signal heads is 12 feet above finished grade at the point of their installation.
650-3.4 Aiming of Signal Indication: For proper lateral orientation, aim signals after
installing and before locking them in position. FY 2023-24 Return to Table of Contents
650-3.5 Wiring Connections: Do not splice signal cable. Connect the proper signal cable
to the terminals in each signal head in order to provide the proper signal indication display when the cables are connected to the signal controller. Wire a separate neutral circuit and return it to the controller cabinet from each vehicular movement as shown in the Contract Documents.
650-3.6 Special Installation Requirements for Optically Programmed Signals:
Install, direct (aim), and conceal optically programmed signals in strict accordance with the instructions of the manufacturer, using the materials furnished by the signal manufacturer, a nd with the direction of the Engineer. Position the signals for maximum performance in accordance with the requirements shown in the Plans, and install them with rigid mount ing assemblies , using elbows and plumbizers of such type as will provide for stab ility of the position of the signals. Do not use clevises in the supporting attachments. Seal the cable routing to the signals to provide permanent water tightness.
650-3.7 Vertically Mounted Plastic Signal Head Assemblies:
The top section of all multi -section (5 -section, 3 -section), vertically mounted, plastic signal assemblies must be constructed of die cast aluminum, unless the entire 3 (or more)-section plastic signal assembly is specifically approved and listed on the APL as a 12 inch plastic 3 (or more)-section vehicle assembly. Single section signals may be constructed of die cast aluminum or plastic.
650-3.8 Backplates: Install backplates on all signal head assemblies.
650-3.9 Sealing Installed Signal Head Assembly: Ensure that the installed signal head
assembly is sealed to excl ude dust and moisture. Drill two, 1/4 inch drain holes in the bottom of the installed signal head assembly.
650-3.10 Concealing Signals Not in Use: Where traffic signals are installed and no t put
into service immediately, or placed out -of-service temporarily, conceal the signal head assembly by securely placing burlap bags or other covering approved by the Engineer over a weather resistant covering of non -transparent material open at the bott om to prevent condensation buildup.
650-3.11 Installation Sequence: Install all traffic signal assemblies at any intersection as
a single operation unless a staged operation is approved by the Engineer.
650-3.12 Emergency Signal Heads: For new emergency fire stations signals, install
12 inch signal heads for all three in dications. For existing 8 inch emergency fire station signals, retrofit with 8 inch LED modules. The 8 inch LED optical unit must conform to the requirements of the ITE’s Performance Specification, Vehicle Traffic Control Signal Heads - Light Emitting Diode (LED) Circular Signal Supplement , dated June 27, 2005.
650-3.13 Transit Signal Heads: For transit signal priority at signalized intersections
with bus queue jumper lanes, install 12 inch two-lens signal head assembly per the MUTCD, Figure 8C-3. The 12 inch LED optical unit indications must comply with the MUTCD, Section 8C.11 and as illustrated in Figure 8C -3. The 12 inch LED optical unit must conform to the requirements of the ITE’s Performance Specification, Ve hicle Traffic Control Signal Heads - Light Emitting Diode (LED) Circular Sign al Supplement , dated June 27, 2005, regarding environmental requirements, transient protection, operating volt age range, and electronic noise. The indication (bar symbol) must measure 1 -1/2 inches wide by 9 inches long. The indication must be capable of being displayed in any angle of orientation from horizontal to vertical. FY 2023-24 Return to Table of Contents
650-4 Warranty.
Ensure that the signal housings, backplates, and any other signal assembly components have a manufacturer’s warranty covering defects for a minimum of three years from the date of final acceptance in accordance with 5 -11 and Section 608. Ensure the warranty includes providing r eplacements, within 30 calendar days of notification, for defective parts and equipment during the warranty period at no cost to the Department or the maintaining agency. Ensure that the LED signal modules have a manufacturer’s warranty covering defects f or a minimum of five years from the date of final acceptance in accordance with 5 -11 and 608. Ensure that the warranty includes providing replacements, within 30 calendar days of notification, for any defective parts and equipment (including falling below minimum intensity levels) during the warranty period at no cost to the Department or the maintaining agency.
650-5 Method of Measurement.
The Contract unit price per assembly for vehicular traffic signal, furnished and installed, will consist of the traffic signal and all components necessary to make a complete unit, including mounting assemblies , backplates, visors, LED modules, labor, and materials necessary for a complete and accepted installation. Separate payment for backplates will only be made for retrofitting existing signal heads, when called for in the Contract Documents.
650-6 Basis of Payment.
Price and payment will be full compensation for all work specified in this Section. Payment will be made under: Item No. 650 - 1- Vehicular Traffic Signal - per assembly. Item No. 650 - 2- Vehicular Signal Auxiliaries - per each. FY 2023-24 Return to Table of Contents SECTION 653 PEDESTRIAN SIGNAL ASSEMBLIES
653-1 Description.
Furnish and install pedestrian signal assemblies as shown in the Plans and Standard Plans, Index 653-001. Meet the requirements of Section 603.
653-2 Materials.
Use pedestrian signals that meet the requirements of Section 995 and are listed on the Department’s Approved Product List (APL). Pedestrian signal assemblies must meet the requirements of the latest edition of the Federal Highway Administration’s (FHWA) Manual on Uniform Traffic Control Devices (MUTCD) and the Institute of Transportation Engineers (ITE) standard for Pedestrian Traffic Control Signal Indications.
653-3 Installation.
653-3.1 General: Use pedestrian signal assemblies capable of being maintained,
adjusted, and disassembled with ordinary hand tools. Pre -assemble the pedestrian signal, with the exception of mounting hardware, prior to installation at the site. Construct the pedestrian signal assembly (including the mounting hardware) to be a weather -tight unit. Conceal all conductors.
653-3.2 Placement: Position pedestrian signals and all mounting assembly members as
either plumb or level, and symmetrically arranged. Align signals in the line of the pedestrian’s vision for the crosswalk being used.
653-3.3 Installation Sequence: Install all pedestrian signal assemblies at any intersection
as a single operation unless a staged operation is approved by the Engineer. Do not install signals at any intersection until all other signal equipment, including the controller, and pedestrian detectors are in place and ready for operation, unless completely covered in accordance with
650-3 10.
653-4 Method of Measurement.
The Contract unit price per assembly for pedestrian signal assembly, furnished and installed, (including mounting hardware but not including poles or pedestals) will include all materials and equipment as specified in the Contract Documents, and all labor and materials necessary for a complete and accepted installation. Payment for removal of pedestrian signal assemblies will be made only when the pole/pedestal is to remain. Otherwise, the r emoval of pedestrian signal assemblies are included in the removal of the pole or pedestal .
653-5 Basis of Payment.
Price and payment will be full compensat ion for all work specified in this Section. Payment will be made under: Item No. 653 - Pedestrian Signal - per assembly. FY 2023-24 Return to Table of Contents