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Section 49 – Signals, Lighting and Electrical Systems

6. The screen shall be fabricated from aluminum anodized flat black or finished with

lusterless black exterior grade latex paint formulated for application to properly

prepared metal surfaces, or shall be fabricated from flat black plastic.

7. The frame for the screen shall be aluminum alloy; polycarbonate will not be allowed.

8. The only alternate method of screening allowed shall be to eliminate the screen

completely and design the pedestrian signal head display such that the results are at

least equal to those obtained with the use of the egg crate or Z-crate type screen as

determined by the Agency.

9. Visors will not be required for pedestrian signal faces.

The Contractor shall mount the framework for all pedestrian signals such that the terminal

section is positioned on the back side of the associated traffic signal poles, i.e., the side furthest

from the public roadway.

49-4.05 Audible Pedestrian Signals

In addition to each standard pedestrian signal shown on the Plan, the Contractor shall

supply and install audible pedestrian signals. One audible pedestrian signal unit shall be

supplied and installed for each standard pedestrian signal head installed as shown on the

Plans. Audible pedestrian signal units shall be model APS-10 by Indicator Controls

Corporation, or approved equal. Unit output volume shall be field adjustable and shall be

capable of output of not less than 90db at 1 watt / 1 meter. Units shall be capable of automatic

self-adjustment of output volume depending on ambient noise conditions. The type of signal

output shall be field-selectable, with each unit capable of emitting both a “cuckoo” signal and a

“peep-peep” signal.

Audible pedestrian signal units shall be mounted on top of the standard pedestrian signal

heads with the face of the units tipped downward such that they are directed toward a point five

feet (5’) above the roadway surface in the center of the crosswalk at the edge of pavement on

the opposite side of the associated crosswalk. Mounting of audible pedestrian signal units shall

conform to manufacturer’s recommendations and as directed by the Agency in the field.

Detectors shall conform to Section 86-5, “Detectors”, of the State Specifications, and to

these Specifications.

49-5.01 Vehicle Detectors

Unless otherwise specified in the Special Provisions, all vehicle detector sensor units in the

controller cabinet will be provided by the Agency.

Splices shall be insulated as specified in these Specifications.

Detector lead-in cables shall be continuous, without splices, from the controller cabinet

detector panel terminal block to the loop termination pull box unless otherwise shown on the

49-5.01.A Construction Materials

Each inductive detector loop conductor shall be continuous, unspliced, Type RHW-USE

neoprene-jacketed or Type USE crosslinked polyethylene insulated No. 12 stranded copper

wire. Conductor insulation thickness shall be forty (40) mils minimum.