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New Traffic Signal or Design Modification, Pre-acceptance Inspection Checklist

(Revised 03/04)

The following checklist is a guideline offered to electrical contractors building traffic signals within the City of Scottsdale.  It is recommended contractors review checklist prior to and during construction to facilitate the final inspection process.  This is offered as a guideline only and may or may not include all C.o.S. requirements.  It remains the contractor’s responsibility to review all applicable documents to ensure compliance to C.o.S. standards and specifications.

The City of Scottsdale encourages contractor input for it’s website content.  Please submit requests or ideas to C.o.S. Traffic Operations at 480-312-5620 or email Traffic Operations

New Traffic Signal or Design Modification

Pre-acceptance Inspection Checklist

Intersection:
T.S. Inspector(s):
Date:
Contractor:
Contractor Fax/Phone:
City Inspector/Phone:

Section A:  Pre-construction Meeting
The following items shall be distributed or discussed with the contractor and ultimate signal owner.  Place checkmark next to each as they are discussed.

Item 1- Model 330 Cabinet Extender Base Item 9 - Tape Color Codes for Traffic Signal Wiring Inspection Points
Item 2 - Electrical Service Cabinet Electrical Drawing Item 11 - Audio Crosswalk Devices IMSA 19-1 Cable Wiring Final Inspection Checklist
Item 4 - Model 330 Input Rack Drawing & Wiring Instructions Item 13 - 170 Microcomputer Requirements IMSA cable wiring wallet cards
Item 6 - Pole Drilling Detail (Modified from ADOT spec) Item 14 - Pedestrian Pushbutton Signs Copy of Plans (from Contractor)
Item 7 - Pre-Acceptance Inspection Checklist Item 16 - Traffic Signal LED Requirements Copy of Equipment Submittals
Item 8 - Inspection Request Form Item 17 - Electrical Service Conduit Requirements Final Inspection Checklist

 

X = Satisfactory

RR =  Rework Required
and Re-inspection

NT = Not Tested
or Inspected

Section AA:  Heads & Pre-emption

Heads

Opticon™ Pre-emption

Aligned properly w/lane All detectors mounted & wired properly
Water caps on top of head Aligned w/direction
Plumizers tight, don’t turn or twist Proper Operation
8" - 10" Sheathing No splices in wiring
Lamps are proper type and wattage, (LED)  
Wiring terminates in TS Block
Mounted on back 45' of pole
Lens all Glass - No plastic
Comments A:

 

 

Section B:  Luminaries, Telephone, Pull Boxes, Pushbuttons

Luminaries

Telephone Intertie

Heads on Proper Cable (Beldon 9418 or equivalent)
Proper wattage lamps No splices - continuous run
Tape Coded with Orange Tape
Operates properly Cable pairs = Bl & Wh, Grn & Red
Light sensitive caps function Pairs connected in cabinet & closure

Pull Boxes

Pushbuttons

Conduit cut low & rounded off Proper placement for side street
Wires properly capped and sealed, 8" - 10" Sheathing Placards are correct (picture)
Wires correctly marked/taped for direction * PBs work correctly, send call to controller
Loop wires twisted 8-10 turns per foot PB wire stranded for low voltage
Pull box level and placed to grade PB is large ADA style button
Pull boxes proper size (#7 or #5)
Pull boxes not damaged, in good condition
PB is mounted at proper height (42")  to
meet ADA requirements.
AB in box for drainage PB is accessible from wheel chair - sidewalk extended to pole base if necessary.
All = fiber / concrete
composite type
 
Main has 8" extension
Comments B:

 

* Scottsdale Tape Color Code

WB = Blue WBLT = Blue & White PPB = Orange + Directional Cable
EB = Green EBLT = Green & White Ped = Violet + Directional Cable
NB = Red NBLT = Red & White

All tape shall be
3M Scotch 35 Model or Super 33

SB = Yellow SBLT = Yellow & White
Left Turn = Color & White
Right Turn = Color & Black
Examples:  WBLT = Blue & White, WBRT = Blue & Black

Section C:  Miscellaneous &  Loops

Miscellaneous

Loops  specifications (pdf/165Kb/1p)

Good condition overall 6 x 40 centered in lanes
All hand-hole covers in place Loops work correctly, pick up & drop cars, trucks and motorcycles.
Wire not cut and sliced in hand-hole Quadrapoles in all LT’s
No sight obstructions,
clear view on all approaches
Lead-insproperly marked, numbered in pull box, twisted, soldered and sealed.
All pole caps on, mast arm
end caps on
Good seal over loops
See Loop Seal page.
Intersection, rung out Loop head way into crosswalk/stop bar
As-builts up to date -
Accurate - copies sent
to Traffic Signals,
9191 E. San Salvador,
Scottsdale, AZ. 85258 and
Traffic Engineering Designer,
7447 E. Indian School Rd. Scottsdale, AZ. 85251
No Crosstalk/Spillover
Extra wire in place for
future phases
Proper spacing between loops
This list is intended as a guide only and may be used by contractors to facilitate signal construction.  This list does not include all traffic signal construction requirements.  Signal contractors are required to review and comply with all applicable documents as called for in the construction contract.  Call the C.o.S. Traffic Operations at 480-312-5620 for questions or for  inspection/re-inspection. 
Comments C:

 

Section D:   Electronic Cabinet and Electric Service

Electronic Cabinet

Electric Service

Type 170 Model 330 Cabinet
Model 170ATC/HC 11 Controller
Foundation 12" above grade
Foundation 6" above grade
30"x30"x36"
Photo Eye, Contactor, Test Switch
Subouts permanantly
"Y Notched" into top of
foundation
P812 Lock
Foundation clean & sealed
contains 8' Copper Ground
Rod
Meter placed
4" tall Tech Pad in front Service address mounted on front
PBs, Pre-Emption, Beldons,
Field Wiring all terminated
Contains 8" Copper
Ground Rod
Wires tape coded to
Scottsdale specifications
Subouts permanantly
"Y Notched" into top of
foundation
Door on opposite of street side (tech placing street
with door open)
 
Surge suppressors installed on loop terminals
Comments D:

General
Comments:

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