Md. Code Ann., Tax-Gen. § 9-221 — § 9-221

The Comptroller may issue a temporary authorization to a motor carrier to operate a commercial motor vehicle in the State if the Comptroller is satisfied that:
(1) the motor carrier does not have an identification marker or trip permit for the commercial motor vehicle;
(2) unforeseen circumstances require operation of the commercial motor vehicle; and
(3) a prohibition of operation would cause undue hardship.