49 CFR § 385.305T - What happens after the FMCSA receives a request for new entrant registration?
(b) The application package will contain the following:
(2) The Form MCS-150, The Motor Carrier Identification Report.
(c) Upon completion of the application forms, the new entrant will be issued a USDOT number.
(d) For-hire motor carriers, unless providing transportation exempt from 49 CFR part 365 registration requirements, must also comply with the procedures established in 49 CFR part 365 to obtain operating authority before operating in interstate commerce.