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Welcome to the Traffic Systems Services Unit General Information
 The Traffic Systems Services Unit (TSSU) is known for the testing of traffic signal systems, as well as turning on new signals, annual signal inspections, signal support & troubleshooting and Intelligent Traffic Systems (ITS) support.
    TSSU also provides assistance with:
    ·         Setting minimum standards for traffic signal equipment on State Highways.
    ·         Performing maintenance & repair of traffic signals and of Road and Weather Information Systems (RWIS) and variable message signs (VMS).
    ·         Maintaining updated inventory for traffic signals and ITS equipment.
    ·         Keeping records of maintenance and inspections for existing intersections.


Our Citizens' Representative Office is here to help.
  • Need assistance, information or problem solving regarding a signal? Contact them here.  
  • Contact TSSU at:
    Bike Lane Picture 
    Oregon Department of Transportation
    Traffic Systems Services Unit
    2445 Liberty ST. NE
    Salem, Oregon,97303
    Phone: 503-378-2645
    Hours: 7:00 am to 3:30 pm, Monday through Friday