DOT Customer Service Center: 202-366-4000
Monday through Friday between 8:30 am and 5:30 pm Eastern Time excluding Federal Holidays.
Deaf, hard of hearing, and speech impaired callers
Contact the general information switchboard using the Federal Relay Services.
Correspondence to the Department may be sent to:
U.S. Department of Transportation
1200 New Jersey Ave, SE
Washington, DC 20590
Please note: Correspondence must be addressed to a specific administration within the U.S. Department of Transportation, or the U.S. Postal Service will not be able to deliver it. A list of DOT administrations and their various responsibilities can be found on the DOT Agencies webpage.