3.1. Overview The City of Phoenix seeks to enter into a contract, with one or more contractors to supply traffic signal head housing and Light Emitting Diode (LED) indication components on an as-needed basis, for five years beginning on or about July 1, 2025. The traffic signal head and LED indication components shall meet the minimum specifications listed in this section. Supplemental traffic signal standard detail information is listed in Exhibit A 3.2. Traffic Signal Heads 3.2.1 Material A. All signal head sections, and housing door assemblies shall be constructed with polycarbonate. 3.2.2 Assembly A. Assemble each traffic signal head with one or more individual LED vehicle signal display sections assembled or connected to create a one-way signal face with multiple possible industry standard configurations of red, yellow, and green ball or arrow sections equipped with a back plate. B. Fasten signal head assemblies together to form a complete signal face so that any section may be rotated on a vertical axis and oriented at any angle with respect to an adjacent section. C. Signal head components shall include a one-piece 5" aluminum non-louvered backplate and 1O" tunnel visors. Each section shall contain LED modules and four lens clips that fit securely together to prevent the entrance of dirt and moisture. D. Signal head assembly, 8": The product's overall height shall be 29 ½" to 30 ½", including the back plate. E. Signal head assembly, 12": The product shall be fastened together to produce a single unit. 3.2.3 Lens Clips A. shall secure an LED or incandescent traffic signal lens with diameters of nominal 8" and 12" (200 mm and 300 mm, respectively), as well as undersized LED modules, in the traffic signal door. B. shall be universally designed to fit most makes and models of modern traffic signal head door housings with round lenses. C. shall be made of a material that functions in cold temperatures (without becoming brittle and cracking) and in hot temperatures (without losing its securement properties), ranging from - 40 degrees to +176 degrees Fahrenheit. D. shall firmly hold lenses with varying thicknesses of gasket materials and prevent rotation and vibration of the traffic signal lens. E. shall surpass Institute of Traffic Engineers (ITE) wind loads for traffic signals without damage to the lens clips. The Contractor shall make available third-party test reports upon request. F. shall allow for the easy removal and installation of a traffic signal lens without the use of tools.
