For purposes of this part, the term:

(1) “Class I electric assisted bicycle” means an electric assisted bicycle equipped with a motor that provides assistance only when the rider is pedaling and that ceases to provide assistance when the device reaches a speed of 20 miles per hour.

(2) “Class II electric assisted bicycle” means an electric assisted bicycle equipped with a motor that may be used exclusively to propel the vehicle but is not capable of reaching a speed of 20 miles per hour.

(3) “Class III electric assisted bicycle” means an electric assisted bicycle equipped with a motor that provides assistance only when the rider is pedaling and that ceases to provide assistance when the device reaches a speed of 28 miles per hour.