Hawaii

Motorcycle:

“(1) Every motor vehicle that has a handlebar and seating that
requires the operator to straddle or sit astride on it and is designed to travel on no more than three wheels in contact with the ground, but excludes a farm tractor and a moped; or (2) Every motor vehicle that has a steering wheel or handlebar and seating that does not require the operator to straddle or sit astride on it, is designed to travel on three wheels in contact with the ground, and is called an autocycle, which is certified by the manufacturer to comply with all applicable Federal Motor Vehicle Safety Standards as of the date of manufacture.”

Motor Scooter:

“(1) Every motor vehicle that has a handlebar and seating that requires the operator to straddle or sit astride on it and is designed to travel on no more than three wheels in contact with the ground, but excludes a farm tractor; or (2) Every motor vehicle that has a steering wheel and seating that does not require the operator to straddle or sit astride on it, and is designed to travel on three wheels in contact with the ground, called an autocycle, which is certified by the manufacturer to comply with all applicable Federal Motor Vehicle Safety Standards as of the date of manufacture, with a motor that produces no more than five horsepower, but excludes a moped.”

Moped:

“a device upon which a person may ride that has two or three wheels in contact with the ground, a motor having a maximum power output capability measured at the motor output shaft, in accordance with the Society of Automotive Engineers standards, of two horsepower (one thousand four hundred ninety-two watts) or less and, if it is a combustion engine, a maximum piston or rotor displacement of 3.05 cubic inches (fifty cubic centimeters) and that will propel the moped, unassisted, on a level surface at a maximum speed no greater than thirty miles per hour; and a direct or automatic power drive system, which requires no clutch or gear shift operation by the moped driver after the drive system is engaged with the power unit. ‘Moped’ does not include an electric foot scooter.”