You can send your comments or questions to the US DOT and find answers through our frequently asked questions site. A team of information specialists answer every message sent from this home page. The information specialists process mail Monday-Friday (9:00 a.m. – 5:00 p.m. Eastern Time), except on federal holidays. Mail sent late Friday or over the weekend will not be reviewed until the following Monday. We try to respond to you within 4 business days.

Correspondence to the Department may be sent to:

U.S. Department of Transportation
1200 New Jersey Ave, SE
Washington, DC 20590

Directions to the U.S. Department of Transportation Headquarters

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. If you are not sure which administration to contact, feel free to e-mail us.

And you can call us at the General Information Main Switchboard at: 202-366-4000 Monday through Friday between 8:30 am and 5:30 pm EST excluding Federal Holidays.

Deaf, hard of hearing, and speech impaired callers may contact the general information switchboard using the Federal Relay Services:

• TTY = 1-800-877-8339
• Voice = 1-866-377-8642
• VCO = 1-877-877-6280