California
Although we at PowerSports Directory attempt to keep up with current Califorina laws. We cannot always keep up with changing laws or list every law related to off road vehicles. For the most current listing of current California laws related to off highway vehicles see the California Off Highway Vehicle Laws
Applicability of Provisions
Except as otherwise provided, this division applies to off-highway motor vehicles, as defined in Section 38006, on lands, other than a highway, that are open and accessible to the public, including any land acquired, developed, operated, or maintained, in whole or in part, with money from the Off-Highway Vehicle Trust Fund, except private lands under the immediate control of the owner or his or her agent where permission is required and has been granted to operate a motor vehicle. For purposes of this division, the term "highway" does not include fire trails, logging roads, service roads regardless of surface composition, or other roughly graded trails and roads upon which vehicular travel by the public is permitted.
Special Note
Privately owned and maintained parking facilities that are generally open to the public are exempt from this division, unless the facilities are specifically declared subject to this division by the procedure specified in Section 21107.8.
USE OF ROADWAYS (38025a C.V.C.). No person shall operate or drive an off-highway vehicle on a roadway, except to cross at an angle of approximately 90 degrees and in a quick and safe manner.
HELMET USAGE. (38505 C.V.C.) All persons, regardless of age, who operate or ride all terrain vehicles (ATV's) on public lands in California must wear an approved safety helmet.
SPEED LAWS.
1. Basic speed law: Don't operate an off-highway vehicle faster than it is safe for conditions. (38305 C.V.C.)
2. Prima Facie Speed Limit: The prima facie speed limit within 50 feet of any campground, campsite, or concentration of people or animals shall be under 15 m.p.h. unless changed as authorized by the code. (38310 C.V.C.)

ALCOHOL AND/OR DRUGS.
It is unlawful for any person who is under the influence of an alcoholic beverage or any drug, or under the combined influence of an alcoholic beverage and any drug, to drive a vehicle. (23152(a) C.V.C.). Driving while license is suspended/revoked off road as well as on road is against the law. (14601 C.V.C.)
PARENTAL SUPERVISION
No person under the age of 14 shall operate an all-terrain vehicle unless that person satisfies the requirements of 38503 C.V.C. (safety certification) and in addition, is accompanied by and under the direct supervision of a parent or guardian. (38504 C.V.C.). Neither a parent or guardian of a child who is under 14 years of age, nor an adult who is authorized by the parent or guardian to supervise that child shall grant permission to, or knowingly allow, that child to operate an ATV in a manner that violates Section 38504. (C.V.C. 38504.1)
REQUIRED EQUIPMENT
According to California State law, any off highway vehicle must be equipped with an approved muffler, brakes, and spark arrester. Headlight and taillight are required for operation at night. Tail lights must include at least one red light .
CARRYING OF PASSENGERS.