The term 'tour vehicle' can refer to two different types of vehicles: a BUS and a MINIBUS. A BUS is a large motor vehicle, usually with a capacity of more than 10 passengers, used for transporting people. It typically has two or three doors and is used for long-distance travel, such as on tours. A MINIBUS, on the other hand, is a smaller vehicle, usually with a capacity of up to 16 passengers, and is used for shorter trips, such as airport transfers or sightseeing tours.