We're upgrading our systems to better secure your information. All vehicle and driver licensing offices will be closed August 31 – September 3, 2018. Some online services will be affected before and during the new system launch. We encourage you to complete your transactions now, in our offices or online.

DOT numbers

Intrastate commercial vehicles

If you operate a commercial vehicle within Washington State, you may need a U.S. Department of Transportation (USDOT) number. Find out if you need one and how to get it.

Interstate commercial vehicles

If you operate a commercial vehicle across state lines, you must have a U.S. Department of Transportation number. Find out how to get one.

Related information

Washington Healthcare Finder
Good To Go!
Access Washington – official state government website