all-terrain vehicle

The ATV is commonly called a four-wheeler in Australia, South Africa, parts of Canada, India, and the United States. They are used extensively in agriculture, because of their speed and light footprint. ATVs are also used for military purposes. (Yamaha Grizzly)

An all-terrain vehicle (ATV), also known as a light utility vehicle (LUV), a quad bike or quad (if it has four wheels), as defined by the American National Standards Institute (ANSI), is a vehicle that travels on low-pressure tires, has a seat that is straddled by the operator, and has handlebars, similar to a motorcycle. As the name implies, it is designed to handle a wider variety of terrain than most other vehicles. It is street-legal in some countries, but not in most states, territories and provinces of Australia, the United States, and Canada.