Streetcar route in Toronto, Canada
The 503 Kingston Rd (303 Kingston Rd during overnight periods) is an east–west Toronto streetcar route in Ontario, Canada, operated by the Toronto Transit Commission. The 503 Kingston Rd travels on a route to the downtown financial district from the Bingham Loop along Kingston Road and shares much of its track with the 501 Queen and 504 King. Originally a rush-hour service, the route was upgraded in September 2019 to run weekdays excluding evenings after the consolidation of 502 Downtowner service into this route.[3] Route 503 in combination with overnight route 303 provide combined 24-hour service.[4]