Toronto Public Transport
Within the city, the Toronto Transit Commission (TTC) operates an extensive system of subways, buses, and streetcars, covering 1,200 km (754 miles) of routes and heavily used by people who live in or near the city. A single flat fare applies for any trip within the city regardless of distance or transfers required with the exception of contracted routes that travel outside of the city and downtown express routes. Toronto has the third highest transit system ridership in North America (after the Mexico City Metro and New York City's New York City Transit Authority).
The backbone of the TTC is a basic subway system with two main lines, the U-shaped Yonge-University-Spadina Line and the east-west Bloor-Danforth Line, running along principal streets and connecting Toronto's outlying areas with its downtown core. Each line also connects to a secondary feeder near one of its outer ends: the Sheppard subway line in the north and the Scarborough RT in the east, making it the most extensive rapid transit system in Canada, despite the fact that the four lines provide a very limited coverage of the city.
Bus and streetcar
The rest of the city is primarily served by a network of about 150 bus routes, many of them forming a grid along main streets, and all of them (except for the #99 and #171 routes) connecting to one or more subway or RT stations. A more distinctive feature of the TTC is the streetcar system, one of the few remaining in North America with a substantial amount of in-street operation. The city of Toronto has the second largest streetcar system in the world behind Melbourne, Australia. Most of the 11 streetcar routes are concentrated in the downtown core, and all connect to the subway.
Inter-regional commuter train and bus service is provided by GO Transit. GO trains and buses connect to the subway.
Inter-regional commuter train and bus service is provided by GO Transit. GO trains and buses connect the city to the rest of the Greater Toronto Area.