View all text of Subpart A [§ 392.1 - § 392.9b]
§ 392.9b - Prohibited transportation.
(a) Safety registration required. A commercial motor vehicle providing transportation in interstate commerce must not be operated without a safety registration and an active USDOT Number.
(b) Penalties. If it is determined that the motor carrier responsible for the operation of such a vehicle is operating in violation of paragraph (a) of this section, it may be subject to penalties in accordance with 49 U.S.C. 521.