All Terrain Vehicle (ATV) is a quad bike with three-wheels or four-wheels. The American standards institute has defined it as a vehicle that travels on low-pressure tires, with a seat that is straddled by operator, along with handlebar for steering control. Liked the name, all terrain vehicle is suitable for variety of terrain. Although it is a street-legal vehicle in some countries, it is not street-legal within most states and province of Australia, United States or Canada. ATV can only used by a single operator. Tandem ATV can be used by the operator and one passenger. People sit on and operate these vehicles like a motorcycle. The extra wheels made it stable. There are three kinds of type for different people to use. It contains Youth,  Utility, Sport and Military.