Md. Code, Transportation § 13–913

(a) (1) When registered with the Administration, every passenger motor vehicle operated for the transportation of persons for hire, except a vehicle described in paragraph (2) of this subsection, is a Class B (for hire) vehicle.

(2) The following vehicles are not subject to the classification specified in this section:

(i) Any vehicle operated on a regular schedule and between fixed termini; and

(ii) Any vehicle for which a different classification is specified in this part.

(b) For each Class B (for hire) vehicle, the annual registration fee is:

(1) On or after July 1, 2024, but before July 1, 2025, $170.00; and

(2) On or after July 1, 2025, $180.00.