ATV For Sale Store Advertising Wizard. ATV For Sale store offers you quality ATV's at low prices. An all-terrain vehicle or ATV for short 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.