Tram engine
A tram engine is a steam locomotive specially built, or modified, to run on a street, or roadside, tramway track. == Legal requirements == In the steam locomotive era, tram engines had to comply with certain legal requirements, although these varied from country to country: The engine must be governed to a maximum speed of 16 kilometers per hour (9.9 mph) (12 km/h or 7.5 mph in the UK) No steam or smoke may be emitted It must be free from the noise produced by blast or clatter The machinery must be concealed from view at all points above 10 centimeters (3.9 in) from rail level Most of the locomotives must have a cab at each end To avoid smoke, the fuel used was coke, rather than coal.