Bloor–Danforth line
With the arrival of the articulated TR trains in 2011, many T1-series trains were transferred from the YUS line to the Bloor–Danforth line. This allowed for the retirement of the H4 cars, between the fall of 2011 until January 27, 2012, when the last H4 train made its last run during the morning rush on the Bloor-Danforth line. The H4s were expected to be scrapped at Future Enterprises in Hamilton, Ontario, although some H4 cars were retained for use as maintenance trains.