Editing Toronto Transit Commission (section)

===Subway===
{{Main|Toronto subway}}
[[File:Museum TTC 20806772132.jpg|thumb|A [[Toronto Rocket]] subway train arrives at [[Museum station (Toronto)|Museum station]]. The station is one of 70 operated along three different subway lines.]]
The Toronto subway system consists of three lines:

* [[Line 1 Yonge–University]]: Canada's first subway line.<ref>{{Cite web |date=November 23, 2017 |title=Canada's First Subway |url=https://www.toronto.ca/explore-enjoy/history-art-culture/online-exhibits/web-exhibits/web-exhibits-transportation/canadas-first-subway/ |access-date=September 5, 2023 |website=City of Toronto |language=en-CA}}</ref> A U-shaped mostly north–south line that opened in 1954 and was last extended in 2017.
* [[Line 2 Bloor–Danforth]]: An east–west line that opened in 1966 and was last extended in 1980.
* [[Line 4 Sheppard]]: An east–west line that opened in 2002.

From 1985 until 2023, [[Line 3 Scarborough]], a partly elevated [[Medium-capacity rail system|light metro]] line served the district of [[Scarborough, Ontario|Scarborough]].

The three subway lines are served by 678 cars grouped in trains of four cars on Line 4 Sheppard, and six cars on Line 1 Yonge–University and Line 2 Bloor–Danforth. The three subway lines share [[non-revenue track]] connections and use the same technology. The rolling stock in use consists of the [[Toronto Rocket|Toronto Rocket trains]] on Lines 1 and 4 and the [[T series (Toronto subway)|T-series trains]] on Line 2. Line 3 Scarborough had a fleet of 28 [[S series (Toronto subway)|S-series cars]] grouped into trains of four cars each and was not compatible with other subway lines, given that the S-series cars used {{Track gauge|1435mm|allk=on}}. It shared no track connections or equipment. Due to the increasing difficulty of performing critical maintenance work on the S-series trains, the existing Line 3 Scarborough service was initially scheduled to be decommissioned permanently in November 2023; instead, the line closed four months ahead of schedule after a derailment on July 24, 2023. The line has been replaced by TTC bus service until the Line 2 Scarborough subway extension to Sheppard and McCowan opens for revenue service in 2030 at the earliest.<ref>{{cite web |title=The future of TTC's Line 3 Scarborough (SRT) |url=https://www.ttc.ca/about-the-ttc/projects-and-plans/Future-of-Line-3-Scarborough |access-date=April 30, 2022 |publisher=TTC}}</ref>

All subway lines provide service seven days a week from approximately 5:45&nbsp;a.m. to 1:30&nbsp;a.m. the following day (last train runs at approximately 1:45&nbsp;a.m. in each direction) except for Sundays, when start of service is delayed until approximately 8:00&nbsp;a.m. During the overnight periods, the subway and its stations are closed to enable maintenance at track level and in the stations themselves. Overnight service is provided by buses and streetcars operating above ground. These overnight routes are issued numbers in the 300-series and are referred to as [[Blue Night Network|Blue Night]] routes, indicated by a typical TTC bus stop sign with a blue band added.

====Projects under construction====
[[File:Science Centre station main entrance (2020-06).jpg|thumb|[[Line 5 Eglinton]]'s [[Don Valley station]] under construction in 2020]]
[[Line 5 Eglinton]], which uses light rail vehicles, is under construction.<ref>{{Cite web |last=Westoll |first=Nick |date=2024-10-02 |title=Toronto LRT woes: Finch West lawsuit underway, Eglinton Crosstown won't open before 2025 |url=https://toronto.citynews.ca/2024/10/01/toronto-finch-west-eglinton-crosstown-lrt-projects-update/ |access-date=2024-11-05 |website=CityNews Toronto |language=en}}</ref> It will run underground in the central part of the line from west of Keele Street to Laird Drive, with most of the remainder of the route travelling at grade, though [[Don Valley station]] will be underground. The full first phase of the route will span {{convert|19|km}} across the city, from {{stl|TTC|Mount Dennis}} in York to Kennedy station in Scarborough.<ref>{{Cite news|title=Ontario Reaches Major Milestone on Eglinton Crosstown LRT Construction|work=news.ontario.ca|url=https://news.ontario.ca/mto/en/2017/08/ontario-reaches-major-milestone-on-eglinton-crosstown-lrt-construction.html|access-date=November 30, 2017}}</ref>

[[Line 6 Finch West]] is an {{Convert|11|km|adj=on}}, 18-stop light rail line under construction,<ref>{{cite web|title=Metrolinx: For a Greater Region - Finch West LRT|url=http://www.metrolinx.com/en/greaterregion/projects/finchwest-lrt.aspx|access-date=July 22, 2019|website=www.metrolinx.com}}</ref> extending west in a dedicated right-of-way lane from Finch West station on Line 1 Yonge–University to [[Humber Polytechnic|Humber Polytechnic's North Campus]] in Etobicoke. The line is forecast to provide approximately 14.6{{nbsp}}million rides a year, or 40,000 a day, by 2031. It has an estimated cost of $1.2{{nbsp}}billion.

The [[Ontario Line]], which is a [[rapid transit]] line and successor to the [[Relief Line (Toronto)|Relief Line]], is expected to be completed by 2030. The Ontario government estimates the line's cost at $10.9{{Nbsp}}billion for the {{Convert|15|km||abbr=|adj=on}} stretch from [[Ontario Place]] to [[Don Mills Road]]<!--Don't bypass redirect per [[WP:NOTBROKEN]]--> and [[Eglinton Avenue]] East at [[Don Valley station]] (part of the under-construction Line 5). It is the largest single expansion in Toronto subway history.<ref name="Ontario Government Lines Up New Toronto Transit Plan">{{cite web |title=Ontario Government Lines Up New Toronto Transit Plan |url=https://urbantoronto.ca/news/2019/04/ontario-government-lines-new-toronto-transit-plan |access-date=July 22, 2019 |website=Urban Toronto}}</ref><ref>{{cite web |date=March 27, 2022 |title=Ford, Tory break ground on new Ontario Line, promise support to impacted businesses |url=https://toronto.ctvnews.ca/ford-tory-break-ground-on-new-ontario-line-promise-support-to-impacted-businesses-1.5836568 |access-date=March 27, 2022 |website=Toronto |language=en}}</ref>

The [[Line 2 Bloor–Danforth]] extension is a {{Convert|7.8|km|adj=on}} subway extension, which will continue Line 2 east towards [[McCowan Road]] and north towards [[Scarborough City Centre]] and to a new terminal at the intersection of McCowan Road and [[Sheppard Avenue]]. The $5.5-billion extension will replace the defunct [[Line 3 Scarborough]] and is expected to be complete in 2030 at the earliest.<ref name="Ontario Government Lines Up New Toronto Transit Plan" />

The Eglinton Crosstown West extension will extend the under-construction Line 5 Eglinton west to [[Renforth station]] and [[Toronto Pearson International Airport|Pearson International Airport]] by 2030 or 2031 and will be mostly underground. The line will travel through all six of Toronto's districts that were [[Amalgamation of Toronto|amalgamated in 1998]] and bring the subway to [[Mississauga]].<ref>{{cite web|title=Eglinton Crosstown West Extension|url=http://www.metrolinx.com/en/greaterregion/projects/eglinton-crosstown-west.aspx|access-date=June 8, 2020}}</ref>

====Future plans====
There is currently one priority TTC expansion plan:<ref>{{cite web|title=Transit expansion in the Greater Toronto Area|url=https://www.ontario.ca/page/transit-expansion-greater-toronto-area|access-date=July 27, 2020|website=Government of Ontario}}</ref>

* The Yonge North subway extension is an extension of Line 1 Yonge–University proposed by the government of Ontario, nearly identical to the existing planned Yonge Subway Extension proposed by the City of Toronto, Metrolinx, and York Region. It would extend Line 1 into [[Richmond Hill, Ontario|Richmond Hill]] in [[Regional Municipality of York|York Region]]. The {{Convert|7.4|km||adj=on}} line would travel north from [[Finch station]] to [[Richmond Hill Centre Terminal]] at [[Ontario Highway 7|Highway 7]] and [[Yonge Street]]. The estimated cost for the project is $5.4{{nbsp}}billion, and it is projected to open after the [[Ontario Line]] has been completed.<ref name="Ontario Government Lines Up New Toronto Transit Plan" /><ref>{{cite web|title=Yonge Subway Extension|url=http://www.vivanext.com/project_YongeSubway|access-date=July 22, 2019|website=vivaNext}}</ref>

Previous plans called for a second, eastward extension of Line 5 to the [[University of Toronto Scarborough]] campus,<ref>{{Cite web |date=May 28, 2021 |title=Eglinton East Light Rail Transit |url=https://www.toronto.ca/services-payments/streets-parking-transportation/transit-in-toronto/transit-expansion/eglinton-crosstown-and-proposed-extensions/eglinton-east-lrt/ |access-date=August 18, 2022 |website=City of Toronto |language=en-CA}}</ref> though this has since been replaced with plans for a separate [[Eglinton East LRT]] (EELRT), formerly known as the Scarborough Malvern LRT.<ref>{{cite web|url=https://www.toronto.ca/community-people/get-involved/public-consultations/infrastructure-projects/eglinton-east-light-rail-transit/|title=Eglinton East Light Rail Transit|date=May 12, 2023 |publisher=Coty of Toronto|access-date=May 24, 2024}}</ref>

Metrolinx is studying an extension of [[Line 4 Sheppard]], to replace the former [[Sheppard East LRT]] project, which would likely connect with the Line 2 Bloor–Danforth extension at McCowan Road and Sheppard Avenue.