South Dakota

Motorcycle:

“includes motorcycles, motorbikes, mopeds, bicycles with motor attached, and all motor operated vehicles of the bicycle or tricycle type, whether the motive power be a part thereof or attached thereto, and having a saddle or seat with the driver sitting astride or upon it, or a platform on which the driver stands, but excluding a tractor. The term does not include an electric bicycle as defined in § 32-20B-9.”

Moped:

“a motor driven cycle equipped with two or three wheels. If a combustion engine is used, the maximum piston or rotor displacement shall be fifty cubic centimeters regardless of the number of chambers in such power source. The power source shall be equipped with a power drive system that functions directly or automatically only, not requiring clutching or shifting by the operator after the drive system is engaged. The term does not include an electric bicycle as defined in § 32-20B-9.”