Mercedes-Benz Unimog in the Dunes of Erg Chebbi in Morocco. Note the high ground clearance due to Portal gear axles
An off-road vehicle is considered to be any type of vehicle which is capable of driving on and off paved or gravel surface.[1] It is generally characterized by having large tires with deep, open treads and a flexible suspension, or even caterpillar tracks.[citation needed] Other vehicles that do not travel public streets or highways are generally termed off-highway vehicles, which would include tractors, forklifts, cranes, backhoes, bulldozers and Golf carts.[citation needed]
Off-road vehicles have an enthusiastic following because of their many uses and versatility. Several types of motorsports involve racing off-road vehicles. The three largest "4 wheel vehicle" off-road types of competitions are Rally, Desert Racing, and Rockcrawling.[citation needed] The three largest types of All Terrain Vehicle (ATV) / Motorcycle competitions are Motocross, Enduro, and also Desert Racing like Dakar Rallye and Baja 1000.[citation needed] The most common use of these vehicles is for sight seeing in areas distant from pavement. The use of higher clearance and higher traction vehicles enables access on trails and forest roads that have rough and low traction surfaces.