UPDATE

Limited in-person driver licensing appointments available. Learn more.
Licensing offices to close for furlough days in July. See a list of dates.
Extensions granted for some expiring driver licenses and instruction permits.

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: Interstate commercial vehicles

If you operate a commercial vehicle across state lines, you must have a United States Department of Transportation (USDOT) number.

How to apply for a DOT number

To get a USDOT number, submit the following completed forms to the Federal Motor Carrier Safety Administration (FMCSA):

  • Motor Carrier Identification Report (MCS-150).
  • Safety Certification Application (MCS-150A).

How to get a copy of the forms

Related information

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