In Snohomish County, Washington, interconnecting five traffic signals and three CCTV cameras to a central signal system cost $91,000.

Connecting ramp terminal traffic signals to regional traffic control system in Washington State DOT's northwest region

Made Public Date
01/02/2013
Identifier
2012-SC00260
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The goal of this project was to connect arterial traffic signal systems near freeway ramps to a central signal system. This would provide the communications infrastructure for future coordinated operations. Three jurisdictions within the region were upgraded as part of this project.

The first of three projects interconnected arterial traffic signals on State Road 96 in Snohomish County near freeway ramps into the regional traffic signal system by installing the following:

  • Five traffic signals on SR 96 along with new 2070 traffic signal controllers
  • Fiber optic cable for connecting the signals to the central traffic signal control software
  • Three CCTV cameras
  • Connection for eight existing traffic signals on SR 527 to the WSDOT i2TMS™ central software at the Northwest Region TMC

The maintenance required to keep the fiber optic interconnection in operation is much less than what was required to keep the previous twisted-pair, copper wire in operation.

System Cost

Interconnecting 5 traffic signals and 3 CCTV cameras to a regional traffic control system - $91,000 (2004)

Taxonomy (ARC-IT) Traffic Management »
Infrastructure-Based Traffic Surveillance (TM01)
 , Traffic Management »
Integrated Decision Support and Demand Management (TM09)
 , Traffic Management »
Traffic Signal Control (TM03)
 , Traffic Management »
Connected Vehicle Traffic Signal System (TM04)
 , Sustainable Travel »
Emissions Monitoring (ST01)
 , Sustainable Travel »
Eco-Traffic Metering (ST03)
 , Traffic Management »
Traffic Metering (TM05)
 , Traffic Management »
Regional Traffic Management (TM07)
System Cost Subsystem
Roadside Control (RS-C)
Transportation Management Center (TM)
 

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