What type of vehicle is categorized as an off-highway vehicle (OHV)?

Off-highway vehicles (OHVs) are specifically designed for use in off-road environments, which include various terrains such as trails, deserts, and forests. This classification primarily includes certain types of motorcycles, such as dirt bikes, as well as all-terrain vehicles (ATVs) that are built to navigate these irregular surfaces.

The definition of an OHV is rooted in their intended use, which is fundamentally different from normal street legal vehicles that operate primarily on paved roads. This characteristic is essential, as it distinguishes them from other vehicle categories intended for highway use.

In this context, only certain motorcycles and ATVs fit within the OHV category, making them the correct answer. Vehicles that do not fit the criteria, such as trucks, buses, and vans, are not primarily intended for off-road operation, and therefore, do not qualify as OHVs. Additionally, the aspect of vehicle registration does not determine whether a vehicle is classified as an OHV.