509 Harbourfront streetcar line. Since March 2017, the line has operated exclusively with Flexity vehicles, making the route fully accessible. The TTC operated one of its two remaining PCC cars (of the A-15 class) on Sunday afternoons during the summer between Victoria Day and Labour Day, subject to the availability of a PCC and a driver trained to operate it. This service had occurred in 2009, 2010, 2011, 2012, 2016 and 2017. Route Most stops along the 509 route are surface stops with islands separating the regular traffic from the streetcar tracks. Streetcars begin underground at Union station and pass through a dedicated underground streetcar station at Queens Quay before climbing to the surface. Stop list Proposed expansion The proposed Waterfront West LRT project would extend the Harbourfront line farther west to join the existing right-of-way along the Queensway. This project was shelved by the city in 2013 but was revived for reconsideration in 2015. References External links TTC Official Site TTC route page for 509 Harbourfront Route 509 – Harbourfront Streetcar (Transit Toronto) published by Transit Toronto on 14 September 2017. published by CityNews Toronto on 22 April 2018. Streetcar routes in Toronto Harbourfront, Toronto 4 ft 10⅞ in gauge railways