Maryland Code, TRANSPORTATION 11-103.3
(1) (i) Is designed for off-highway use;
(ii) Operates on at least three low-pressure tires;
(iii) Has a seat or saddle designed to be straddled by the operator;
(iv) Has handlebars for steering;
(v) Is intended by the manufacturer to be operated by a single operator; and
(vi) May be designed to carry one passenger; or
(2) (i) Is designed for off-highway use;
(ii) Operates on four or more low-pressure tires;
(iii) Has a bench or bucket-style seating; and
(iv) Has a steering wheel for steering.