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. [78 FR 52655, Aug. 23, 2013, as amended at 81 FR 68358, Oct. 4, 2016]