Cutting circles, needlessly defacing the beach and driving on sand dunes or in vegetated areas--except at posted crossings--is prohibited at all times. Passenger Safety: Passengers shall not ride on the fenders, hood, roof, sides, tailgate or in any other place on the outside of a moving vehicle. No vehicle shall be used to tow a person or any recreational device over land or water or in the air. Use of safety belts and child restraints is required by law. Over Sand Vehicle (OSV) Use - Assateague Island National Seashore (U.S. National Park Service)