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The BiLevel coaches were designed by Toronto's regional commuter rail service, GO Transit and Hawker Siddeley Canada in the mid-1970s as a more efficient replacement for GO's original single-deck coaches and cab cars.[1] Later coaches were manufactured by Urban Transportation Development Corporation/Can-Car and finally Bombardier, who now owns the designs and manufacturing facility. There are more than seven hundred such coaches in service today and almost all have been built at the company's Thunder Bay, Ontario, and Plattsburgh, New York, plants.
