Any passenger on a motorcycle, motor scooter, or motor-driven cycle must be provided with a separate rear seat, a separate foot-rest, and an appropriate handlebar or grip for his or her use, and must wear a properly fitting helmet of a type approved by the administrator of the division of motor vehicles. No person shall operate a motorcycle, motor scooter, or motor-driven cycle unless any passenger on it wears a helmet and is able to rest his or her feet upon a foot-rest. Any passenger on a motorcycle, motor scooter, or motor-driven cycle under twelve (12) years of age must have a properly secured back-rest or equivalent, shall have his or her feet placed upon the foot-rest, and shall be seated behind the operator unless a side car is provided. When, however, a side car is provided this age requirement shall not apply to any passenger(s) in the sidecar. Violations of this section are subject to fines enumerated in § 31-41.1-4.