Md. Code, Transportation § 23-107

(a) (1) Before the Administration titles and registers any used vehicle, except a Class L (historic) vehicle, it shall require a valid inspection certificate for the vehicle.

(2) For the purposes of this subsection, an inspection certificate shall remain valid from the date the inspection certificate is issued for a period of:

(i) 90 days; or

(ii) In the case of an inspection certificate issued for a used vehicle owned and held in inventory by a dealer licensed under Title 15 of this article, the earlier of:

1. 6 months; or

2. When 1,000 miles have been added to the vehicle’s odometer since the inspection certificate was issued.

(3) This subsection does not apply to any vehicle transferred within 30 days after the date of an inspection certificate issued for the vehicle and filed by the Administration in its title records.

(b) (1) If a person applies for titling and registration of a vehicle, the Administration may:

(i) Withhold delivery of a certificate of title pending receipt of an inspection certificate; and

(ii) Issue a temporary registration.

(2) A vehicle for which a temporary registration has been issued under this subsection shall be inspected within 60 days of the issuance of the temporary registration.

(c) (1) When an existing school vehicle (Class H) is changed to any other registration class, the vehicle shall be inspected at a licensed State inspection station.

(2) The inspection certificate shall be submitted at the time the vehicle is being registered in the new class.

(d) All buses other than those that are required to be inspected annually by the Public Service Commission or by the Administration shall be inspected annually at a licensed State inspection station.