Off-highway vehicle (OHV) or off-road vehicle (OHV)

Any motorized vehicle designed for or capable of cross-country travel on or immediately over land, water, sand, snow, ice, marsh, swampland, or other natural terrain; except that such term excludes (1) any registered motorboat; (2) any military, fire, emergency, or law enforcement vehicle when used for emergency purposes; and (3) any vehicle whose use is expressly authorized by the respective agency head under a permit, lease, license, or contract. See also Off-road vehicle designations