Mich. Comp. Laws § 257.32b: "Moped" defined.

Sec. 32b.

(1) "Moped" means a 2- or 3-wheeled vehicle to which both of the following apply:

(a) It is equipped with a motor that does not exceed 100 cubic centimeters piston displacement and cannot propel the vehicle at a speed greater than 30 miles per hour on a level surface.

(b) Its power drive system does not require the operator to shift gears.

(2) Moped does not include an electric bicycle.