To improve air quality in downtown Syracuse, the New York State DOT deployed a computerized traffic signal system and optimizd the signal timing of 145 intersections at a total project costs of $8.3 million.
Made Public Date


New York
United States

Summary Information

In 1990, New York State and the Environmental Protection Agency identified Onondaga County as not meeting the National Ambient Air Quality Standards (NAAQS) for carbon monoxide (CO). To improve air quality in downtown Syracuse and Onondaga County, the New York State Department of Transportation (NYSDOT) proposed installing a computerized traffic signal system and optimizing the signal timing of 145 intersections. Prior to the implementation of the new traffic signal system, signalization in the City of Syracuse consists of City owned and NYSDOT owned traffic signals. Each agency was allowed to select the type of equipment deemed appropriate for their system. The equipment was obsolete and operationally inefficient. Given the variety of equipment and multiple agencies operating the equipment, communication among many of the signals was non-existent.

The cost of the computerized signal system was $8,316,307. Detailed costs for the signal interconnect project are provided in the table below. These construction-related costs include ITS and non-ITS-related equipment and installation. In addition to the specific project costs, other costs associated with the project are available. The original agreement for preliminary engineering, which included costs of consultant design and project planning, was funded in 1992. The preliminary engineering cost was $1,591,200. Construction inspection cost, totaling $677,234, was paid out from 1996 to 2001. Construction activity was completed in 1998, but until 2001 a small amount was charged to the project for contract administration and dispute resolution. Approximately $7.2 million of the project cost are in 1996 dollars. Approximately $1.1 million was added to the contract at various times between 1996 and 2001 when all disputes were finally settled.

Steel Conduit
2” to 4” diameter.
Conduit Installation
Excavation and surface restoration.
Clean Existing Conduit
Includes excavation, backfill, surface restoration, cast iron covers, wire hangers, and grounding system.
Traffic Signal Poles
Span wire and Mast arm poles; includes foundations.
Span Wire Assemblies
Signal Heads
Includes bracket assemblies, signal sections, and disconnect hangers.
Ground Mounted Signs
Includes new street signs, parking signs, misc. regulatory signs, and removal of existing signs.
Overhead Signs
Includes metal and lighted signs.
Copper Signal Cable
2 to 19 conductors.
Pedestrian Signals
Includes both pedestrian signals mounted on traffic signal poles and on dedicated poles. Cost of pedestrian poles and foundations included.
Emergency Pre-Emption System
Includes detectors, phase selector cards in controllers, cable, and field testing equipment.
Inductive Loop Surveillance
Corridor and intersection loops were not recorded separately in project records. Also, as loops vary widely in size and placement, a “per loop” unit price was not given.
Controller Assemblies
Power Connections

Includes microprocessor, conflict monitor, backpanel, mounting hardware for pole mounts, bases and foundations for base mounts. Includes disconnect and service wire.
Fiber Optic Interconnect
Includes multi mode and single mode cable, modems, installation of cable in conduit, and splicing.
CCTV Cameras
Graphic Displays
Includes CCTV camera remote controls.
Start-up Equipment
Includes testing and diagnostic equipment, spare fiber optic cable, controller components.
Computer Hardware and Software
Cost of commercial-off-the-shelf (COTS) traffic control software and upgrades.
Utility Work
Includes energizing new installations ($125,000), installing fiber optic cable in utility-owned ductwork, and installing guy wires on utility poles ($369,000).
Maintenance and Protection of Traffic
Includes basic M&PT, construction signs, and flagging.
Maintaining Existing Traffic Signal Equipment
Removal of Outdated Traffic Signal Equipment
Modification of Existing Traffic Signal Equipment
Includes repair, relocation, and painting of existing equipment.
Engineer's Office
Storm Damage Repair
Dispute resolution was paid to compensate the contractor for additional costs related to delays and design errors.
System Cost

Project Cost: $8,316,000.