(1) Is designed to be operated by human power with the assistance of a motor;

(2) Is equipped with pedals that mechanically drive the rear wheel or wheels;

(3) Has two or three wheels, of which one is more than 14 inches in diameter; and

(4) Has a motor with a rating of 1.5 brake horsepower or less and, if the motor is an internal combustion engine, a capacity of 50 cubic centimeters piston displacement or less.

(b) “Moped” does not include an electric bicycle.