49 CFR § 390.200T - USDOT Registration.
(a) Purpose. This section establishes who must register with FMCSA using the Form MCSA-1, the URS online application, beginning January 14, 2017.
(b) Applicability. Notwithstanding any other provisions of this part or 49 CFR 385.305T(b)(2), a new applicant private motor carrier or new applicant exempt for-hire motor carrier subject to the requirements of this subchapter must file Form MCSA-1 with FMCSA to identify its operations with the Federal Motor Carrier Safety Administration for safety oversight. Form MCSA-1 is the URS online application, and both the application and its instructions are available from the FMCSA website at https://www.fmcsa.dot.gov/urs.
(c) Definition. For purposes of this section, a “new applicant” is an entity applying for operating authority registration and a USDOT number who does not at the time of application have an active registration or USDOT, Motor Carrier (MC), Mexican owned or controlled (MX), or Freight Forwarder (FF) number, and who has never had an active registration or USDOT, MC, MX, or FF number.