over the years various streetcar routes were replaced by other modes, and where new subway lines replaced streetcars during regular hours, buses were put on overnight. but the overnight routings remained largely unchanged for decades, even after the ttc's service area expanded in 1954 from the toronto city limits as they then were, to include the whole of metropolitan toronto ("metro", which in 1998 became the present amalgamated city of toronto). only one overnight route (the queen streetcar, later 501 queen, to long branch loop) extended a significant distance into the suburbs.