Off-roading

Off-roading is a term for driving a specialized vehicle on unpaved roads, such as sand, gravel, riverbeds, mud, snow, rocks, and other natural terrain.

Off-road vehicle

These terrains can sometimes only be traveled by vehicles designed specifically for off-road driving (such as heavy-duty trucks and equipment, SUVs, ATVs, snowmobiles, motorcycles, mountain bicycles) or vehicles that have extra ground clearance, sturdy tires, and in some cases, front and rear locking differential. Examples of vehicle manufacturers notable for producing types of off-road vehicle (ORV) include AM General, Land Rover,and Jeep, although most vehicle manufacturers have some sort of off-road vehicle in their current range.Trucks are often fitted with these extras by default. Furthermore, the military usually design their vehicles with off-roading in mind, such as a Jeep or HMMWV, or buy them from off-road manufacturers, such as Land Rover, which has produced cars for the armed forces of many countries.

Thanks Source :Wikipedia