The TTC moves about 1.5 million riders every weekday. The TTC is the third-largest public transit system in North America, servicing some 4.5 million people in the Greater Toronto Area, with a network of subways, streetcars, buses and a specialized service, Wheel-Trans, for people who require accessible transportation. The TTC is committed to meeting the growing needs of the region with subway and light rail expansion, carrying an additional 175 million riders by 2021.