Register a transponder

Learn how to register, update, transfer or add a transponder for your commercial vehicle.

Transponders are registered to a VIN and can be moved to a new vehicle by sending a request in writing by fax or email. Updates made in Washington are automatically forwarded to Idaho, South Dakota, New York and Connecticut.

To make changes to a registered transponder, contact us via fax or email.

Register, update or transfer a transponder

Include the following in a fax or email to register, update or transfer a transponder:

  • A copy or picture of the commercial vehicle’s registration/cab card
  • The USDOT Number
  • The transponder number or a picture of the transponder with the barcode numbers
    (For multiple updates at once, write the transponder number on the registration/cab card or include a list with the plate and VIN they go with)

Remove a transponder

To delete a transponder, include the following in a fax or email:

  • The transponder number or license plate and state
  • Request for it to be canceled/deleted

14 fish passage projects were completed in 2020

improving access to 54.2 miles of upstream habitat.

11,959 incidents responded to

by WSDOT’s incident Response teams during second quarter of 2021, 15% more than same quarter in 2020.

41 Pre-existing Funds Projects Advertised

during the eighth quarter of the 2019-2021 biennium.