According to Montana law, an off-highway vehicle (OHV) is a self-propelled vehicle used for recreation or cross-country travel on public roads, trails, easements, lakes, rivers, or streams.
- OHVs include, but are not limited to, motorcycles, all-terrain vehicles (ATVs), dune buggies, amphibious vehicles, air-cushion vehicles, and other forms of land transportation that are powered by a means other than muscle or wind.
- OHVs do not include:
- Snowmobiles and other vehicles designed primarily for travel on snow
- Boats and other vessels designed primarily for travel on water
- Vehicles that are licensed under other Montana laws such as sport utility vehicles and 4x4 trucks