Maryland Code, TRANSPORTATION 13-710
(1) The motor carrier responsible for the safety of the vehicle is subject to an out-of-service order, as defined in § 16-812(i)(1) of this article, or other federal operating authority sanctions; or
(2) The United States Department of Transportation determines that the motor carrier responsible for the safety of the vehicle is attempting or has attempted to operate a motor carrier under a new identity or as an affiliated entity to avoid:
(i) Complying with a United States Department of Transportation order;
(ii) Complying with a statutory or regulatory requirement;
(iii) Paying a civil penalty;
(iv) Responding to an enforcement action; or
(v) Being linked with a negative compliance history.
(b) A denial, cancellation, suspension, or revocation under this section shall continue until the out-of-service order or other federal operating authority sanctions have been lifted and the motor carrier is allowed to resume operations.