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Section 49 – Signals, Lighting and Electrical Systems

this impossible, a programmed visibility head may be used and the extra cost

Any field adjustment needed to meet the above described criteria of location of crosswalks,

signal poles, ramps, and pull boxes shall be considered incidental and no additional payment

will be made. All field adjustments shall be coordinated with the Agency in the field.

49-2.05.C Final Location of Traffic Signal Poles

The Contractor shall pothole the pole location area for utility conflicts. If the site is found to

be unsuitable, the Contractor shall re-pothole in the vicinity, as approved by the Agency, until a

suitable location is found. Unused pothole areas shall be restored to their original or better

conditions. The pothole and restoration work shall be considered as included in the contract

lump sum price paid for individual traffic signal and no additional compensation will be allowed

Conduit shall conform to Section 86-2.05, “Conduit”, of the State Specifications, and these

Specifications. Unless otherwise shown or specified in the Contract, conduit shall be rigid non-

metallic. Rigid non-metallic conduit shall be electrical grade and be Schedule 40 or better.

Pole risers shall be two-inch (2”) Schedule 80 rigid non-metallic conduit unless otherwise

Schedule 40 rigid non-metallic conduit shall be used in signal, street light, controller, and

service enclosure foundations. Install end bell fittings on all non-metallic conduits of one inch

(1”) and larger trade size.

All conduit systems, new or existing, shall be blown out with compressed air.

Conduits terminating in standards or enclosures shall emerge from the foundation vertically,

± 5° in any direction.

A solid No. 10 THW copper wire with green insulation shall be installed in all conduits which

are to receive future conductors. All wires placed in conduits for future use at any one traffic

signal location and for any traffic signal interconnect system shall be spliced to be electrically

All rigid non-metallic conduit shall be connected with the appropriate adhesive.

After conductors have been installed, the ends of conduits terminating in pull boxes,

interconnect cabinets, controller cabinets, and service enclosures shall be sealed with an

approved type of sealing compound.

All empty conduits shall be identified with their destination/termination point, and sealed with

plugs approved for the purpose.

Conduit placed under sidewalks may have six inches (6”) of cover, if the conduit trench is

backfilled with concrete.

Conduit may be installed in paved areas of streets as specified in Section 49-2.02, “Earth

Saw Trenching”, in this Section of these Specifications. Conduit placed in existing paved areas

shall be placed in a trench approximately two inches (2”) wider than the outside diameter of the

conduit to be installed. The trench shall not exceed six inches (6”) in width. Conduit depth shall

not exceed fourteen inches (14”) or conduit trade diameter plus ten inches (10”), whichever is

greater, except that at pull boxes the trench may be hand dug to a required depth. The top of