An
all-terrain vehicle (
ATV), also known as a
quad,
quad bike,
three-wheeler,
four-wheeler, or
quadricycle is defined by the
American National Standards Institute (ANSI) as a vehicle that travels on low-pressure tires, with a seat that is straddled by the operator, along with handlebars for steering control. As the name implies, it is designed to handle a wider variety of terrain than most other vehicles. Although it is a
street-legal vehicle in some countries, it is not street-legal within most states and provinces of Australia, the United States or Canada.