49 C.F.R. § 390.203
(c) A for-hire motor carrier, unless providing transportation exempt from the commercial registration requirements of 49 U.S.C. chapter 139, must obtain operating authority as prescribed under § 390.201(b) and part 365 of this subchapter before operating in interstate commerce.
Effective Date Note:At 88 FR 80184, Nov. 17, 2023, § 390.203 was suspended indefinitely, effective Nov. 17, 2023.