A bus is a vehicle used for mass transit that has many seats for passengers. Apart from usage in the adult world, most public schools and many private schools also have a system for busing children to the school and back home.
Buses are usually powered by diesel engines but electric buses are also used. An electric bus may be powered by an on-board battery or by overhead wires. In the latter case, the vehicle is known as a trolleybus.
- School buses, USA
- Double-decker bus in London, England
- Battery-electric bus in England
- Trolleybus in Sao Paulo, Brazil