walls and dark red doors and panels, unlike the simulated woodgrain panels used on the predecessor H-series cars. Lines serviced Yonge–University line (1995–2015) Bloor–Danforth line (1995–present) Sheppard line (2002–2016) Future The T1s have a life expectancy that allows them to remain in service until at least 2026; however, at the end of 2019, the TTC proposed an overhaul to extend the T1 fleet's life by 10 years. The TTC started implementing mid-life upgrades for the fleet including LED-type interior lighting, along with side LED destination signs and external pre-boarding route and destination announcements. As of 2019, the TTC is in the process of installing CCTV cameras on the remaining T1 subway fleet. The TTC also considered upgrading the fleet to run on an automatic train control (ATC) system, which it is in the process of installing to replace the current wayside signaling system on Lines 1 and 4 and is expected to install on Line 2 by 2020 in conjunction with the opening of the Scarborough subway extension. However, due to prohibitively expensive costs of such a retrofit, it is unlikely that this will happen in the near future, and the TTC plans to replace all T1 trains with new ATC-compatible equipment instead. Gallery References External links Page on the T-series cars at Transit Toronto Toronto rapid transit passenger equipment Bombardier Transportation multiple units 600 V DC multiple units Electric multiple units of Canada