Commercial vehicles

Get over legal load permits for cars, trucks, and commercial vehicles. Learn more about commercial vehicle restrictions, route maps, transponders, and weigh station e-screening.

Permit program

Please note we cannot issue permits over the phone.

New way to see truck parking on I-5

If you have a USDOT number, there is now a way to find the number of estimated truck parking spaces available on I-5, up to four hours in advance: Truck parking at rest areas

Route & commercial vehicle restrictions

Restrictions and requirements for oversize and overweight commercial vehicles operating on Washington state roadways. Commercial vehicle drivers are responsible for verifying route restrictions, overhead height clearances, and other requirements.

Commercial vehicle permits

Vehicles over legal dimensions and/or weight need a permit before entering the state or moving within the state. Learn how to get a permit to move oversized and overweight loads on state highway systems.

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.

Maps & tools for commercial vehicles

Commercial vehicle tools to help with issuing permits and understanding requirements.

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April is work zone safety awareness month - learn more

1,557 work zone-related crashes

were recorded on state highways in 2025.

542 people were injured

in 2025 due to work zone-related crashes.

29% increase in fatality collisions

in work zones from 2024 to 2025.