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The vehicles used on the Ankara Metro are Bombardier Transportation-built modified versions of Toronto, Canada's H6 subway model, which were originally built by Urban Transportation Development Corporation (UTDC), a company later purchased by Bombardier.
The original moving block signaling system for rapid transit was introduced by Urban Transportation Development Corporation (a Crown Corp in Ontario) and was successfully implemented for the Scarborough RT in Toronto, Ontario, which was opened in 1985.