Steam vehicles are propelled by steam pressure. Steam typically gets built up in a large onboard pressurized boiler containing water, heated by a coal-burning firebox. Smoke and hot air from the firebox pass through the boiler through a cluster of tubes, heating up the water around them, before getting released through a blast pipe at the other end of the boiler.
{{pll|Rail Vehicle Types|Motorized rail vehicles}} with steam {{pll|Powertrains Overview|powertrains}} are powered by steam, produced onboard by burning {{pll|Fuel Storage|fuel}} to boil {{pll|Water Storage|water}}.
