T-series (Toronto subway car)
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).
Design advances
The T1 cars entered service between 1996 and 2001 and became the mainstay of the TTC subway fleet. They replaced the older M1s, H1s, H2s, and some H4s, many of which had been in revenue service since the 1960s.
The T1s incorporated many of the design elements that had been refined throughout the H-series program. Each model in the H-series production run improved on the last, adding features such as single use controls for acceleration and braking, air conditioning and regenerative braking. The T1 built on those advances and integrated new computer technology, creating a more modern train. The T-series were the first TTC cars to use AC propulsion, rather than the DC chopper control system used in the older H5 and H6 subway cars (both of which have since been retired).