504A and 504B continue to Sumach Street, where route 504A turns south on Cherry Street to proceed to Distillery Loop. Route 504B continues on King Street, as the street bends northeast to merge with Queen Street East, then crosses the Queen Street Viaduct and the Don River to arrive at Broadview Avenue. Route 504B turns north on Broadview Avenue. Continuing on Broadview Avenue, route 504B eventually crosses Danforth Avenue arriving at Broadview station on Line 2 Bloor–Danforth. King Street Transit Priority Corridor Route 504 King passes through the King Street Transit Priority Corridor, a transit mall located between Bathurst Street and Jarvis Street. Within the mall, there are restrictions on road traffic to prevent the obstruction of transit vehicles. Trucks and cars may enter the traffic mall, but must leave after a few blocks by turning right; left turns within the transit mall are not allowed. Roncesvalles Avenue Between 2009 and 2011, Roncesvalles Avenue was rebuilt to a new design, which included the addition of bike lanes and a widened sidewalk "bumpout" at stops to allow riders to board streetcars directly from the curb. In these sections, the bike lane gently rises from the main road to run on top of the ; when a streetcar is stopped at a bumpout, cyclists are required to stop and allow riders to board or alight from the vehicle. However, the platform height at the bumpouts was incompatible with wheelchair ramp on the new low-floor Flexity Outlook streetcars, which were introduced in 2018 on the 504 King route. Thus, , no stops along Roncesvalles Avenue between Queen Street and Dundas Street West are accessible. The TTC expects to have adjusted the bumpout height to correct the accessibility problem by 2022. History On July 1, 1923, as part of a reorganization of streetcar routes, the King streetcar route acquired its current U-shape. The west end of the line was at the Vincent Loop, located near the northeast corner of Dundas Street West and Bloor Street West, across the street from today's Dundas West station. The east end of the line was at the Erindale Loop, located at the northeast corner of Broadview Avenue and Erindale Avenue, on the north side of today's Broadview station. From July 1, 1923, to July 13, 1951, some King streetcars provided rush-hour service along Bloor Street West between Dundas Street West and Jane Loop. The TTC ended this service