A tram (also known as a tramcar; a streetcar or street car; and a trolley, trolleycar, or trolley car) is a passenger rail vehicle which runs on tracks along public urban streets and also sometimes on separate rights of way. Trams powered by electricity, which were the most common type historically, were under the classification of electric street railways. Trams also include horse railways which were widely used in urban areas before electrification. Trams may also run between cities and/or tow