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  1. Ask A Question - Transportation

    Visit our FMCSA Registration Forms page to find the latest version of the available forms, timeframes, and other useful information.

  2. Chat - Transportation

    2 days ago · Inquiry Type Required USDOT or Operating Authority Drug & Alcohol Clearinghouse Launch Chat

  3. Email - ask.fmcsa.dot.gov

    Submit a question to our support team. Our dedicated staff will respond within 48 hours.

  4. Account Assistance

    Request your username If the email address you enter is in our system, we'll send you your username. If you don't have a username, we'll send you a link to set up an account instead. …