New York City Subway rolling stock – Wikipedia

The New York City Subway is a large rapid transit system and has a large fleet of rolling stock.As of November 2016, the New York City Subway has 6418 cars on the roster.. A typical revenue train consists of 8 to 10 cars, although in practice they can range between 2 and 11 cars. The subway’s rolling stock have operated under various companies: the Interborough Rapid Transit (IRT), Brooklyn …

https://en.wikipedia.org/wiki/New_York_City_Subway_rolling_stock