Transponder & weigh station e-screening

E-screening helps safe and legal carriers bypass weigh stations by identifying, weighing, and checking commercial vehicles for violations as they drive. This helps enforcement target high-risk carriers.

Bypass green light for transponder equipped trucks bypassing the weigh stations
The green light to bypass a weigh
station for commercial vehicles equipped
with a transponder.

Purchase a transponder

Find out how to purchase a transponder for a commercial vehicle, which allows the vehicle to be electronically screened and enables the driver to bypass weight stations.

Register a transponder

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

Transponder program & benefits

Learn about the transponder program, which allows commercial vehicles to bypass weigh stations by electronically verifying the legal weight, safety rating, and credentials as the commercial vehicle continues down the road at freeway speeds.

Transponder support & questions

Find technical support and answers to your questions about transponders, including troubleshooting tips and other helpful information.

Weigh station e-screening technology

Find out how we're using technology to improve commercial vehicle safety for more than 33,000 trucking companies with more than 245,000 transponder-equipped vehicles.

Performance highlights from the Gray Notebook

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.