The rules about when and where it is legal to drive an ATV vary by state, but most states only allow ATVs for off-road driving. The Consumer Product Safety Commission website offers information about driving an ATV in each state.
In Alabama, ATVs are not permitted on beaches or sand dunes along the Gulf of Mexico. The state of Alaska requires people under 14 years of age to have supervision from an adult when riding ATVs in state parks. The Department of Natural Resources regulates ATVs in Alaska.
California requires ATV riders to wear helmets at all times when riding ATVs on public lands, and ATVs must have titles and updated registration documents. Children under 14 must have adult supervision to ride ATVs on public land. California prohibits driving ATVs on the highway.