Trams are light rail transit vehicles that are powered by electricity and run on tracks. Tram is a type of public transportation, also known as streetcar, or tram for short. It is a type of light rail (trains powered by electricity, also called trams). But it usually runs on the streets, and the train has only one car, or at most five cars. In addition, some cable cars running on urban tracks can also be counted as a type of streetcar. Since trams are powered by electricity, they do not emit waste gas, making them a pollution-free and environmentally friendly means of transportation.
