The names of different types of bus vary around the world according to local tradition or marketing, although buses can be classified into basic types based on their general features.
Double-decker bus of Kowloon Motor Bus, Hong Kong
Since motorisation, the traditional configuration of a bus was an engine in the front and an entrance at the rear. Since the 1960s, with the transition to one man operation, buses in the developed world have taken the form of mid or rear-engined designs, with a single door at the front, or multiple doors, depending on need. Front-engined buses still persist for niche markets such as American school buses, some minibuses, and buses in less developed countries, which may be derived from truck chassis, rather than purpose built bus designs.
A bus may have an open platform so that passengers can join and alight without for the driver to open doors, but in many countries this is considered dangerous and is discouraged or indeed illegal.[citation needed] On the other hand, in some countries bus use is so heavy that passengers will cling to the outside of the vehicle if it is full.[citation needed]
Buses will often have a legal maximum capacity of passengers.
While most bus and coach designs will normally have two axles (or three for articulated buses), buses and coaches may often be fitted with additional axles to accommodate extra length or weight. This is common on three-axle rigid coaches. This is subject to local regulations.
Double-decker bus of Kowloon Motor Bus, Hong Kong
Since motorisation, the traditional configuration of a bus was an engine in the front and an entrance at the rear. Since the 1960s, with the transition to one man operation, buses in the developed world have taken the form of mid or rear-engined designs, with a single door at the front, or multiple doors, depending on need. Front-engined buses still persist for niche markets such as American school buses, some minibuses, and buses in less developed countries, which may be derived from truck chassis, rather than purpose built bus designs.
A bus may have an open platform so that passengers can join and alight without for the driver to open doors, but in many countries this is considered dangerous and is discouraged or indeed illegal.[citation needed] On the other hand, in some countries bus use is so heavy that passengers will cling to the outside of the vehicle if it is full.[citation needed]
Buses will often have a legal maximum capacity of passengers.
While most bus and coach designs will normally have two axles (or three for articulated buses), buses and coaches may often be fitted with additional axles to accommodate extra length or weight. This is common on three-axle rigid coaches. This is subject to local regulations.
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