642 Breakers # 1 and 2 shall provide power for the signal control equipment (controller cabinet). Specifically circuit breaker # 1 shall power the controller circuits and # 2 shall power the flasher and associated circuitry. These two circuits must be of the same polarity. Breakers # 3 and 4 are spare terminals to accommodate future lighting circuits and breakers 3 and 4 must be of opposite polarit y to provide a 240 volt circuit. The Contractor shall make all arrangements for connection to the power supply and shall obtain a meter and meter socket from the power company at the time these are required. The Contractor shall furnish, install, pay ins tallation fee and provide all materials necessary for the power connection not provided by the power company. All external power service wiring from the service head or service point on shall be enclosed in rigid metal conduit; this includes equipment gro und wires. When complete and in place the power service shall provide in the signal controller cabinet, two separate fused 120 VAC, 60 Hz power sources rated at 30 amps each of the same polarity or phase.
660.18 Testing :
660.18.1 Operational Field Tests: Upon completion of the installation of a traffic signal
system, operational field tests shall be run on each and every part of the system. After the initial field tests are run satisfactorily, the Contractor shall conduct a continuous 12 -hour operating test for approval. Upon successful completion of the 12 -hour test and with the approval of the Engineer, a 30-day test period will then be initiated. Final acceptance of an installation will not occur until 30 days of system operation are completed and termed satisfactory by the Engineer. A final inspection may be conducted by the Division at any time prior to completion of the 30-day test. At the option of the Engineer, equipment found to be defective during this inspection may warrant the renewal of the full or any part of the operational test period. In addition, the Contractor shall be responsible for equipment malfunctions that occur during any test period. The Contractor shall repair or replace any defective equipment within 24 hours after bei ng notified by the Engineer. After the repair has been effected, the Engineer may at his option renew any or all of the operational test period.
660.19 Method of Measurement :
660.19.1 Signal Controll ers: Signal controllers shall be measured as a complete unit in
place by intersection or control location. This item shall consist of the complete electrical mechanism for controlling the operation of traffic control signals, including the timing mechani sm and all necessary auxiliary equipment mounted in a cabinet or other enclosure. Included under signal controllers shall be traffic adjusted master controllers and computers and associated equipment. This item shall include cabinets or other enclosures as required.
660.19.2 Detectors :
660.19.2 1-Traffic Detectors: Traffic detectors shall be measured per unit complete
and in place, mounted in a cabinet or enclosure as required. This item shall consist of the detector tuning unit only. The roadway traffic sensors, such as loops, and associated cables outside of cabinet, shall be included in "Miscellaneous Signal" items. Any supplementary cabinets or other enclosures as required for the detector tuning units shall also be included in "Miscel laneous Signal". 643 660.19.2. 2-Pedestrian Detector: Audible Pedestrian Detector Push Buttons will be measured as a complete unit in place in accordance with the Plans and these Specifications. The item shall include but not limited to power service, elec trical conduit, audible pedestrian detector push button, and all wiring, appurtenances and work.
660.19.3 Signal Sections: Signal heads shall be measured complete and in place by signal
head section. Red, yellow, green, arrow and walk -don't walk signa l sections shall be considered complete when assembled on the support structure in accordance with the signal head configuration shown on the Plans. Both vehicular and pedestrian heads shall be included in this item. In addition, this item shall include all the necessary hardware for mounting the signal heads to the support structures. Optical programming shall be included in this item.
660.19.4 Signal Supports: Signal supports shall be measured as a complete unit in place,
per mast arm structure or per pole support, including foundation. This item includes guys, messenger cable and anchor bolts for support structures, but does not include such items as control ler cabinet mounting brackets and signal head mounting hardware covered in other sections.
660.19.5 Junction Boxes: Junction boxes shall be measured as a complete unit in place.
This item includes aggregate base, concrete, iron frame and cover as requ ired. All junction boxes shall be included under this item, both units constructed for the signal system as well as those required for the signal interconnect.
660.19.6 Signal Interconnect: Signal interconnect shall be measured as a complete unit
in place per interconnected system. This item includes most of the materials and construction related to the signal interconnection system only. Supports and wire -ways constructed primarily for other purposes shall not be included in this item. Conduit, sup port structures, support hardware wire and messenger cable installed solely for the interconnect system shall come under this item. This item shall not include coordinating units or interconnect system junction boxes.
660.19.7 Miscellaneous Signal: Miscellaneous signal items as required to complete a
traffic signal system in accordance with the Plans or these Specifications shall be measured complete in place by intersection or control location. This item shall include but no t be limited to power services, electrical conduit, vehicle sensors (loops, probes, etc.), and all wiring, appurtenances and work not included in other Contract items.
660.19.8 Signal Removal: Signal removal shall be measured as a complete unit by
intersection. It shall include the furnishing of all necessary equipment and labor to adequately remove the existing signal equipment as necessary to meet the requirement of the Plans. The existing roadway and traffic control devices shall be maintained or r evised as required during construction to assure the safe and expedient movement of traffic (See 660.4).
660.19.9 Priority Control System Emitter: Bid includes the furnishing, installation
(mounting of EO on vehicle/structure), and testing of a P.C.S. emitter and measured per unit complete and in -place. This item shall include driver’s training which will consist of one (1) hour of system management to the receiving agency, per intersection, by a qualified representative as designated by the P.C.S. man ufacturer.
660.19.10 Priority Control System Detector: Bid includes the furnishing, installation
and testing (1) P.C.S. detector, the mounting of this unit, all necessary wiring, card rack and interface unit, confirmation light and all other materials to operate the P.C.S. intersection system. This item shall be measured complete and in -place by intersection.
660.20 Basis of Payment :
660.20.1 General: When accepted as complete, the quantities determined as provided
above will be paid for at the contract unit price bid for the items listed below, which prices and payments shall be full compensation for furnishing all materials and doing all the work prescribed in a workmanlike manner, including excavating, backfilling, replacing sidewalks and pavements, replacing curb and gutter, disposal of waste and debris and for furnishing all labor, equipment, tools, and incidentals necessary to complete the work. Unit bid prices shall be submitted as indicated on the Plans per code unit, type or intersection number.
660.20.2 Detectors: Pay item codes shall be as follows:
660.20.2 1 -Traffic Detectors:
(LPS) -Loops (VTDS) -Video Detection (PAS) -CCTV (Closed Circuit Television) (RADD) -Radar Advance Digital Detection
660.20.2 2 -Pedestrian Detector:
(APS) -Accessible Pedestrian Stations
660.20.3 Signal Sections: Pay item codes shall be as follows:
(V-12) - 12” Vehicle Signal Sections (R, Y, G or ARROW) (V-12P) - 12” Programmed Vehicle Signal Sections (R, Y, G or Arrow) (G-16) - 16” Pedestrian Control Signal Heads (W -DW)
660.20.4 Signal Supports: Pay item codes shall be as follows:
(Type) --Poles and Mast Arms (PED) --Pedestal
660.20.5 Junction Boxes: Pay item codes shall be as follows:
(Type) --H or L
660.20.6 Signal Removal: Payment for traffic signal removal shall be in accordance with
one of the following:
i.If there is a pay item in the Contract for Signal Removal, the Contractor shall remove the equipment as specified and payment shall be one lump sum, per intersection basis. ii. If there is not a pay item in the Contract for Signal Removal, and removal is required for completion of the Contract, existing signal equipment shall be removed by the Contractor unless otherwise specified. No additional compensation will be paid and removal work as well as salvage value of equipment if applicable, shall be considered in the bid price for “Miscellaneous Signal” items.
Source: West Virginia Standard Specifications for Road and Bridge Construction, 2023 Edition. Pages 662–664 of 1,006.