A tourist bus is a type of bus that is specifically designed to transport and cater to tourists. It is used to take people sightseeing or on guided tours, typically in popular tourist destinations. Full definition
By bus: The hop - on / hop - off tourist buses stop at all the main sights. (thomascook.com)
Car accidents can also happen in parking lots, especially when a mix of vehicles - large tourist buses, cars, motorcycles and cyclists - are all looking for the best spot. (bwglaw.com)
Expect to take comfortable tourist buses pretty much everywhere you go and you can enjoy a domestic and international flight once in a while. (creditwalk.ca)