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FMCSA issues each motor carrier a PIN to allow for online transactions within many FMCSA systems. This PIN can be found on the FMCSA letter mailed to each carrier as a reminder of FMCSA’s requirement to file a biennial update of carrier registration information (Form MCS-150).
If you are unable to locate the letter assigning your PIN, visit http://safer.fmcsa.dot.gov. Then select the link for your preferred method of receiving your USDOT# PIN. For help with PIN issues, call FMCSA technical support at 1 (800) 832-5660.