Md. Code, Transportation § 11–103.3

“All–terrain vehicle” means a motor vehicle that:

(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.