The New York City Subway is a large rapid transit system, and has a large fleet of rolling stock. Old cars, some from the original companies (IRT and BMT), are preserved at the New York Transit Museum, while others have been sold to private individuals, rail and trolley museums. Between 1985 and 1989 some of the IRT trains were painted red, giving them the name Redbirds. Since then, all of these cars have been replaced by more modern subway trains between 2000 and 2005. Many other cars that are older (R-32 through R-42), will also be retired, when the R160 cars are delivered.