SECTION 950 — TRAFFIC SIGNALS — GENERAL

950.1 DESCRIPTION — These specifications are the general requirements pertaining to the work of the furnishing and installation of operational traffic signals, including controller assemblies, traffic signal supports, electrical distribution, traffic signal heads, detectors, communications, and systems.
Words and phrases peculiar to traffic signals, not defined in these specifications, or in the regulations, are to be as defined in NEMA Standards Publication No. TS1.


950.2 MATERIAL —

(a) Materials Acceptance. Prior to the submission of a bid proposal, verify that Certificates of Approval, Sale or Provisional, have been issued by the Department, for traffic signal equipment, as provided in 67 Pa. Code, Chapter 211.
Within 3 weeks after the Notice to Proceed, submit to the Department, for review and acceptance, a tabulation of all project traffic signal materials that are to have a Certificate of Approval. Include the type of material, manufacturer's name, model number, and the Department's Certificate of Approval number for each item to be supplied. Provide catalog cuts only for further clarification of the material, when requested. As applicable, tabulate the following:

• Controller Units
• Flasher Units
• Coordinators
• Signal Heads
• Detector Amplifiers
• Auxiliary Equipment
• Electrically Operated Signs

(b) Wiring Diagrams and Timing Plans. Provide three copies of the cabinet wiring diagram and manufacturer's timing plan for each controller assembly.

(c) Certification. Section 106.03(b)3. Certify that all signal supports satisfy the Department's criteria and are adequate to support the loads specified. Certify the structural adequacy of all sign and signal brackets.

(d) Warranties, Instruction Manuals and Guarantees. Furnish, as specified in Section 1104.01.

(e) Shop Testing. Submit results from shop tests to the Engineer, as specified in Section 1104.01 .

950.3 CONSTRUCTION — As shown on the Standard Drawings and as follows:
Perform work, in accordance with applicable codes, regulations, and standards.
Existing signals are to remain in operation, as is, until the new signals are put into operation.
Remove all existing traffic signal supports and signal equipment, unless otherwise indicated. Maintain existing controller assemblies, as a unit. Store material on the project site. Provide a listing of equipment for the jurisdictional owner which indicates when and where items can be obtained. Assume responsibility for damage to claimed items during removal and storage.
Abandon underground conduit, conductors, and detectors not interfering with new construction. Remove foundations and junction boxes to be abandoned in "off roadway" areas to 1 foot below final grade and satisfactorily dispose of such items.
Satisfactorily repair damage to galvanized finishes.
After the traffic signal installation becomes operational, conduct a continuous, 24-hour operating test for not less than 3 consecutive calendar days. Make the initial turn-on in the presence of the District Traffic Engineer between the hours of 9 a.m. and 2 p.m., Tuesday through Thursday, except holidays. Correct failures during the test period by repairing or replacing malfunctioning parts or equipment or faulty workmanship, regardless of the cause, within 24 hours after having been notified by the Engineer. After correcting failures caused by defective equipment, material, or faulty workmanship, reconduct the 30-day test.
Guarantee the satisfactory in-service operation of mechanical and electrical equipment, related components, and the controller assembly for a period of 180 days from the date of completion of the specified 30-day field test. During this period:

• Maintain equipment in the controller cabinet. Use additional locks, as necessary, to prevent entry by others.
• Repair faulty workmanship, repair or replace defective materials or equipment and correct malfunctions in the controller cabinet within 48 hours after commencing repairs.
• Commence repairs no later than the working day following notification of failures or malfunctions.
• Guarantee repairs or replacements for the balance of the 180-day guarantee period, or 30 days, whichever is the longer period.

Provide the Engineer with the name and telephone number of the person to be notified in the event of failures or malfunctions during the guarantee period.
Satisfactorily restore areas damaged by construction.


950.4 MEASUREMENT AND PAYMENT — The removal and storage of existing traffic signal material, the restoration of areas damaged by construction, and the testing, including testing power costs, will be incidental to the work specified in Section 951 and 957.

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