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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

    1 day 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. Email Address

  5. Email - ask.fmcsa.dot.gov

    Update Your Registration Get Authority to Operate Get a Cargo Tank Number Get a USDOT Number Commercial Driver's License Licensing Overview and Resources Military Driver Programs Under 21 …

  6. Find Answers - ask.fmcsa.dot.gov

    Screen Reader users press enter to select a Filter by product. Filter by product Select a product Filter by category Select a category

  7. Question Submitted

    If you need to update your question and you already have an account, log in, expand the account dropdown menu and select Support History. You can then select the question to open and update it.