The T-series rapid transit cars (widely known as the T1 as only one production run was made) are a Toronto subway car model, ordered in 1992 and built in 1995–2001. The cars were built by Bombardier Transportation's Thunder Bay Works for the Toronto Transit Commission. Before the T-series, the TTC had been buying the H-series cars manufactured by Hawker Siddeley Canada and later Urban Transportation Development Corporation (UTDC).