Md. Code, Transportation § 11–135

(a) (1) “Motor vehicle” means, except as provided in subsection (b) of this section, a vehicle that:

(i) Is self–propelled or propelled by electric power obtained from overhead electrical wires; and

(ii) Is not operated on rails.

(2) “Motor vehicle” includes a low speed vehicle.

(b) “Motor vehicle” does not include:

(1) A moped, as defined in § 11–134.1 of this subtitle;

(2) A motor scooter, as defined in § 11–134.5 of this subtitle;

(3) An electric bicycle, as defined in § 11–117.1 of this subtitle;

(4) An electric low speed scooter, as defined in § 11–117.2 of this subtitle; or

(5) A personal delivery device, as defined in § 21–104.5 of this article.