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  • Traffic Systems Services Unit (TSSU)
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    Welcome to the Traffic Systems Services Unit Web Site.
    The TSSU Unit is primarily thought of for Chamber testing, New Traffic Signal Turn on, Traffic Signal Inspections, Signal support and Intelligent Traffic Systems support.
General Information TSSU's Responsibilities:
Our Citizens' Representative Office is here to help.
Need assistance, information or problem solving regarding a signal? Contact them here.  
Contact TSSU at:
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Oregon Department of Transportation
Traffic Systems Services Unit
2445 Liberty ST. NE
Salem, Oregon,97303


Phone: 503-378-2645

Email: tssu@odot.state.or.us


Hours: 7:00 am to 3:30 pm, Monday through Friday



    Provide expertise in traffic signal testing, turn-on, inspection, and maintenance.

Set minimum standards for traffic signal equipment on State Highway System.

Perform maintenance of Road and Weather Information Systems (RWIS), and variable message signs (VMS).

Maintain an updated inventory of all traffic signal control and ITS equipment.

Keep records of inspections for existing devices.

Perform environmental testing of all traffic signal equipment used within State of Oregon.

Repair and test all state maintained control equipment modules.