Trials with buses powered by hydrogen fuel cell buss are underway in several locations.

Researchers in Korea are working on an electric bus powered by a continuous inductive connection with a cable buried in the road.

Twin Coach also built motor buses (buses powered by internal combustion engines).

In a few months, the authority, along with other systems in the state, will bid on buses powered by compressed natural gas.

Transit officials are also studying buses powered by alternative fuels like methanol, ethanol and electricity.

Electric bus is a bus powered by electric energy.

A steam bus is a bus powered by a steam engine.

Victory Liner's fleet is composed of buses powered by engines built by leading brands.

An electric bus is a bus powered by electricity.

The first buses powered by internal combustion engines were used in 1895 and this is still the most common power source.