Bus - Manufacture

Manufacture

Early bus manufacturing grew out of carriage coachbuilding, and later out of automobile or truck manufacturers. Early buses were merely a bus body fitted to a truck chassis. This body+chassis approach has continued with modern specialist manufacturers, although there also exist integral designs such as the Leyland National where the two are practically inseparable. Specialist builders also exist and concentrate on building buses for special uses, or modifying standard buses into specialised products.

Integral designs have the advantages that they are have been well tested for strength, stability and so forth, and also are off-the-shelf. But there are, however, two incentives to use the chassis+body model. First it allows the buyer and manufacturer both to shop for the best deal for their needs, rather than having to settle on one fixed design— the buyer can choose the body and the chassis separately. Second it is likely that over the lifetime of a vehicle (in constant service and heavy traffic) that it will get minor damage now and again, and to be able easily to replace a body panel or window etc. can vastly increase its service life and save the cost and inconvenience of removing it from service.

As with the rest of the automotive industry, into the 20th century bus manufacturing increasingly became globalized, with manufacturers producing buses far from their intended market to exploit labour and material cost advantages. As with the cars, new models are often exhibited by manufacturers at prestigious industry shows to gain new orders.