|CALIFORNIA VEHICLE CODE
24000. Wherever in this division the word "department" occurs, it means the Department of the California Highway Patrol.
27800. It is unlawful for a driver of a motorcycle or a motorized bicycle to carry any other person thereon, except on a seat securely fastened to the machine at the rear of the driver and provided with footrests, or in a sidecar attached to a motorcycle and designed for the purpose of carrying a passenger. Every passenger on a motorcycle or a motorized bicycle shall keep his feet on the footrests while such vehicle is in motion.
27801. No person shall drive any two-wheel motorcycle:
(a) Equipped with a seat so positioned that the driver, when sitting astride the seat, cannot reach the ground with his feet.
(b) No person shall sell, or offer for sale, for use by a driver or passenger of a motorcycle or motorized bicycle any safety helmet which is not of a type meeting requirements established by the department.
(b) It is unlawful to operate a motorcycle, motor-driven cycle, or motorized bicycle if the driver or any passenger is not wearing a safety helmet as required by subdivision (a).
(c) It is unlawful to ride as a passenger on a motorcycle, motor-driven cycles, or motorized bicycle if the driver or any passenger is not wearing a safety helmet as required by subdivision (a).
(d) This section applies to persons who are riding on motorcycles, motor-driven cycles, or motorized bicycles operated on the highways.
(e) For the purposes of this section, "wear a safety helmet" or "wearing a safety helmet" means having a safety helmet meeting the requirements of Section 27802 on the person's head that is fastened with the helmet straps and that is of a size that fits the wearing person's head securely without excessive lateral or vertical movement.
(f) In enacting this section, it is the intent of the Legislature to ensure that all persons are provided with an additional safety benefit while operating or riding a motorcycle, motor-driven cycle, or motorized bicycle.