(1) Low-speed vehicle means any:

(a) Four-wheeled motor vehicle:

(i) With a speed attainable in one mile of more than twenty miles per hour and not more than twenty-five miles per hour on a paved, level surface;

(ii) With a gross vehicle weight rating of less than three thousand pounds; and

(iii) That complies with 49 C.F.R. part 571, as such part existed on the date specified in section 60-201; or

(b) Three-wheeled motor vehicle:

(i) With a maximum speed attainable of not more than twenty-five miles per hour on a paved, level surface;

(ii) With a gross vehicle weight rating of less than three thousand pounds; and

(iii) That is equipped with a windshield and an occupant protection system.

(2) Low-speed vehicle does not include a motorcycle with a sidecar attached.