Wikipedia
Metrolinx is a Crown agency that manages and integrates road and public transport in the Golden Horseshoe region, which includes the cities of Toronto and Hamilton, of Ontario, Canada. The organization was created by the Government of Ontario as the Greater Toronto Transportation Authority on April 24, 2006. It adopted the public name, Metrolinx, in 2007.
The agency is responsible for the implementation and management of the Presto card, an electronic fare system that is being used in all public transport systems in the Greater Toronto and Hamilton Area, as well as on the OC Transpo in Ottawa. In 2009, Metrolinx was transferred ownership of GO Transit, which operates regional commuter rail and coach services in the region. The agency also operates the Union Pearson Express, the airport rail link connecting Toronto Pearson International Airport to Downtown Toronto. Some of its current transit expansion projects include Line 5 Eglinton in Toronto, the Mississauga Transitway, and the BLAST network in Hamilton.