Weather and road conditions may affect some of our licensing locations. Be sure to check the status of your local office before you go.

If the information on this translated website is unclear, please contact us at 360.902.3900 for help in your language of choice.

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

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Access Washington – official state government website