Utah

Motorcycle:

“(a) a motor vehicle, other than a tractor, having a seat or saddle for the use of the rider and designed to travel with not more than three wheels in contact with the ground; or (b) an autocycle.”

Motor-Driven Cycle:

“(a) a motorcycle, moped, and a motorized bicycle having: (i) an engine with less than 150 cubic centimeters displacement; or (ii) a motor that produces not more than five horsepower. (b) ‘Motor-driven cycle’ does not include: (i) an electric personal assistive mobility device; (ii) a motor assisted scooter; or (iii) an electric assisted bicycle.”

Moped:

“(a) a motor-driven cycle having: (i) pedals to permit propulsion by human power; and (ii) a motor that: (A) produces not more than two brake horsepower; and (B) is not capable of propelling the cycle at a speed in excess of 30 miles per hour on level ground. (b) If an internal combustion engine is used, the displacement may not exceed 50 cubic centimeters and the moped shall have a power drive system that functions directly or automatically without clutching or shifting by the operator after the drive system is engaged. (c) ‘Moped’ does not include: (i) an electric assisted bicycle; or (ii) a motor assisted scooter.”