The term 'ALL-TERRAIN VEHICLE' refers to a type of VEHICLE that is designed to be driven on any type of TERRAIN, including sand, mud, snow, and rocks. An ATV is typically equipped with large tires and a powerful engine, allowing it to traverse difficult TERRAIN. A BUS is a large motor VEHICLE used for public transportation, typically carrying passengers between cities or towns. It is usually operated by a driver and can carry up to several dozen passengers.