H-series (Toronto subway car)
|This article needs additional citations for verification. (January 2012)|
An H6 train at St George Station (since retired)
|Manufacturer||H1 – H5: Hawker Siddeley
|Built at||Thunder Bay, Ontario|
|Replaced||G-series (replaced by H6)|
H4: 1974-1975 
|Number built||H1: 164
|Number in service||None|
|Number scrapped||H1: 157?
|Fleet numbers||H1: 5336-5499
|Operator||Toronto Transit Commission Ankara Metro Bombardier built modified versions H6|
|Car body construction||Stainless steel|
|Car length||23 m (75 ft 6 in)|
|Width||3.14 m (10 ft 4 in)|
|Height||3.65 m (12 ft 0 in)|
|Floor height||1.1 m (3 ft 7 in)|
|Doors||8 sets (4 sets per side) per car|
|Maximum speed||88 km/h (55 mph)|
|Weight||H1: 41,010 kg (90,410 lb)
H2: 40,970 kg (90,320 lb)
H4: 41,630 kg (91,780 lb)
H5: 47,250 kg (104,170 lb)
H6: 48,040 kg (105,910 lb)
|Power output||H1: 121 hp (90 kW)
H2 – H4: 116 hp (87 kW)
H5: 126 hp (94 kW)
H6: 123 hp (92 kW)
|Auxiliaries||120/208 V AC Battery Auxiliary|
|Electric system(s)||600 V DC Third rail|
|Current collection method||Contact shoe|
|Track gauge||4 ft 10 7⁄8 in (1,495 mm) Toronto gauge|
The H-series rapid transit cars (the "H" standing for Hawker, the original manufacturer) are subway car models built from 1965 to 1990 for the Toronto Transit Commission (TTC) in Toronto, Ontario, Canada. From 1965 to 1979, the cars were built by Hawker Siddeley Canada, and later by its new owner the Urban Transportation Development Corporation. The cars were built at the Thunder Bay plant. These cars used to be the standard cars for the TTC.
Based on the 75 ft (22.86 m) M1, the early H-series cars improved on the design, notably by enlarging the operator's cab and using a single-handle controller. Over the program, revisions were made to the designs, and each production model in the H-series improved on the last. The H5s were the first to use "chopper controls" and were also the first cars with regenerative braking along with air-conditioning systems and a brighter and more modern passenger interior, featuring individual seats instead of the padded bench seats used on previous models. The H6s replaced the original red G-class cars and no further H-Series orders were made. A prototype then-new car T-series was built by UTDC in 1990–1991, and evaluated by the TTC. By the time the TTC was ready to order new cars in 1992, UTDC had been sold to Bombardier. Bombardier then constructed the new car order, which added new technology such as AC propulsion to a similar platform based on the predecessor H-cars.
Retirement and future
The H1 and H2 cars were replaced by the T1 class cars. H1 cars were retired between 1997 and 1999. H2 cars were retired in 2000 and 2001. Nearly all H1 and H2 cars were scrapped, although several H1 cars are used as subway work vehicles. Some H4 cars were also retired when T1 series cars were delivered.
In 2006, the TTC placed an order with Bombardier Transportation for the first 39 new articulated Toronto Rocket (TR) trains to be operated on Yonge–University–Spadina line (Line 1). This allowed the TTC to retire the remaining H4 and H5 cars.
With the arrival of the new articulated TR trains in 2011, some T1 series trains were transferred from the Yonge–University–Spadina line to the Bloor–Danforth line (Line 2) to allow 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. The H5 trains followed shortly thereafter, replaced directly by more TR series trains. The last H5 train made its final service run on June 14, 2013, with a one-round trip on the Yonge-University-Spadina line. On the return trip from Finch to Downsview station, technical difficulties were encountered at Eglinton West station, meaning the train had to go out of service. While many H5 subway cars were scrapped, some cars were sent to the United States for refurbishing prior to being sent to their final destination, the Lagos Metropolitan Area Transport Authority, where they will be used on a new Eko Rail project based in Lagos, Nigeria. 
A contract option was exercised in 2010, when the TTC ordered 31 additional new TR trains making 70 trains in total that would allow for the retirement of the H6 subway cars, operating on the Bloor–Danforth line and to have enough new TR trains available for the opening of the Yonge-University-Spadina line extension.
The last H6 train made its final service run on June 20, 2014, with a one-round trip on the Bloor-Danforth line which began at Greenwood station, and headed eastbound to Kennedy station, then westbound to Kipling station and back to Kennedy station where the train was decommissioned. It was initially reported that some H6 cars were to be sold to the Lagos Metropolitan Area Transport Authority for use on a new Lagos Light Rail project (along with some of the already-retired H5 cars). However, this deal was cancelled and as a result, the remaining H6's are being scrapped as were H4s and most H5 subway cars.
- H1 - 5336-5499
- H2 - 5506-5575
- H3 - 5500-5505 (experimental/modified versions of the H2 that led to development of the H5)
- H4 - 5576-5663
- H5 - 5670-5807
- H6 - 5810-5935
Only a few H1 and H4 series cars were refurbished and converted to work cars with the TTC:
- Four H1 cars (5388-5391) were destroyed by fire at the Christie Subway Station in October 1976. Car 5391 was salvaged and converted to subway work car RT23 in 1984.
- H1 5422-23 now RT38-39
- H1 5457-58 now RT-43-44
- H1 5336-37 now RT 46-45
- H1 5386-57 now RT66-67
- H1 5408-09 now RT68-69
- H4 5635 now RT58
- H4 5694-95 now RT60-61
- H4 5616-17 now RT62-63
- H4 5594-95 now RT64-65
H2 and H3 series cars were not converted into work cars and were scrapped in 2001-2002 along with several H4 cars in 2011-2012:
- One H5 car (5755) was retired and scrapped after a switching accident at the Greenwood Subway Yard in December 1981, and one H5 car (5721) was retired after the subway collision in August 1995.
- Cars 5720 and 5754 were mated together and renumbered as 5754-5755 in 2003.
- H5 Car 5796 became a mockup T1 car
- One H6 car (5824) was cut in half in Hamilton, and sent back to Toronto to promote the movie Godzilla at Yonge and Elm street in May 2014.
- Toronto Transit Commission (September 18, 2009). "TTC Service Summary".
- "Procurement Authorization - 39 New Subway Trains – Proposal No. P31PD0571". Toronto Transit Commission. 30 August 2006. Retrieved 15 Oct 2011.
- "Bombardier Signs Contract to Build 234 Subway Cars for Toronto". Bombardier Inc. 31 Dec 2006. Retrieved 15 Oct 2011.
- Tapper, Josh (2012-01-27). "Long-running subway car takes final journey". The Toronto Star (Toronto). Archived from the original on 2012-01-28. Retrieved 2012-01-28.
- Kalinowski, Tess (6 Sep 2011). "TTC subway cars bound for Nigeria". Toronto Star. Retrieved 15 Oct 2011.
- "Eko Rail's Trains Begin Journey to Lagos". PR Newswire. 2011-09-27. Retrieved 2012-12-05.
- "Procurement Authorization Amendment – Option to Purchase 31 Additional New Subway Train Sets (For H6 Subway Car Replacement and TYSSE) (FOR ACTION)". Toronto Transit Commission. 6 May 2011. Retrieved 15 Oct 2011.