California off-road races need land-manager approval, insurance, safety planning and any local permits; requirements depend on the venue and route.

California group rides may need event approval depending on the land, route, size, and activity; separate event permits from rider and vehicle requirements.

California ATV and UTV use on private land may be exempt from a Green Sticker when kept there; public land or road access can change the rule.

California dune riding commonly requires a flag at least 8 feet above ground; measure the installed setup and confirm local flag rules before riding.

Riding brush land in California requires checking route access, fire closures and spark-arrester rules; a permit alone never makes an off-route trail legal.

California dune riders need a visible flag on a tall whip; check the 8-foot height, 6-by-12-inch flag, mounting, and local rules before riding.

California spark arrester approval depends on the exact part and machine; verify the current Forest Service listing and local rules before riding public land.

California spark arrester rules depend on the land and riding area. Check approval, fitment, maintenance, and local access rules before you ride.

California competition machines still face OHV sound limits. Check the vehicle category, manufacturing date, exhaust condition, and test method before riding.

California’s older ATV and UTV sound limit is generally 101 dB for pre-1986 machines, but age does not excuse a failed exhaust test.