Empty Train

Carried along the track, an empty train car glistens in the sun, clean as a whistle before the billions of dirty souls stuff themselves inside its little space. The silence here is golden, as most of the day and night will be spent with the sounds of grumbling passengers and laughing children echoing off the walls. Large cities often have a metro system, also called underground, subway or tube. The trains are electrically powered, usually by third rail, and their railroads are separate from other traffic, usually without level crossings. Usually they run in tunnels in the city centre and sometimes on elevated structures in the outer parts of the city. They can accelerate and decelerate faster than heavier, long-distance trains. The term rapid transit is used for public transport such as commuter trains, metro and light rail. However, in New York City, services on the New York City Subway have been referred to as "trains". In most countries, such as the United Kingdom, the distinction between a tramway and a railway is precise and defined in law. In the US and Canada such street railways are mostly referred to as trolleys. The key difference between a railroad and a trolley system is the latter running primarily on public streets, whereas trains have a right of way separated from the public. Often the US style interurban and modern light rail are confused with a trolley system, as it too may run on on the street for short or medium long sections. This sound uses the following file from Freesound: http://www.freesound.org/samplesViewSingle.php?id=122733