DOT Customer Service Center: 202-366-4000
TTY Number = 1-800-877-8339
Voice Number = 1-866-377-8642
VCO Number = 1-877-877-6280
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 am – 5:00 pm Eastern Time), except on federal holidays.
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. If you are not sure which administration to contact, feel free to e-mail us.