Toronto Transit Commission
Privately operated transit services in Toronto began in 1849. In later years, a few routes were operated by the city, but it was 1921 when the city took over all routes and formed the Toronto Transportation Commission to operate them. During this period service was mainly provided by streetcars. In 1954, the Toronto Transit Commission (TTC) adopted its present name, opened its first subway line, and greatly expanded its service area to cover the newly formed municipality of Metropolitan. The system has evolved to feature a wide network of bus routes with the subway lines as the backbone of the service.