Editing Line 1 Yonge–University (section)

===Names and terminal designation===
On the Yonge portion of the line, nearly all stations located at cross streets are named after said streets, while on the University portion, they are either named for local landmarks with the cross street subtitled below (e.g. {{stl|TTC|Osgoode}} – {{em|[[Queen Street, Toronto|Queen Street]]}}) or after cross streets but with a "West" suffix for stations at streets that have counterparts along Yonge, though [[Dundas West station]] is on Line 2 Bloor–Danforth. The pattern of using landmarks as station names was exclusively used on the original (southern) section of the University branch, and the ''West'' designated street-naming convention is typically used on the former Spadina (northern) section. The two interchange stations on the University branch where it intersects Line 2 Bloor–Danforth are named {{stl|TTC|St. George}} and {{stl|TTC|Spadina}} after the north–south cross streets of Line 2, which runs below Line 1 between these stations. Due to various factors, some stations along the Spadina portion are named, formerly were named, or are proposed to be renamed using landmark or district names, albeit without subtitles: the stations at Steeles Avenue and Highway 7 (which have no corresponding stations along the Yonge branch) are respectively named "Pioneer Village" (after the nearby Black Creek Pioneer Village, which has since been renamed [[the Village at Black Creek]]) and "Vaughan Metropolitan Centre" (after [[Vaughan Metropolitan Centre|Vaughan's new downtown core]], based on the precedent set by {{stl|TTC|North York Centre}} and {{stl|TTC|Scarborough Centre}} stations). {{stl|TTC|Sheppard West}} was originally called "Downsview" but was renamed in 2017 to avoid confusion with the adjacent new {{stl|TTC|Downsview Park}} station, and {{stl|TTC|Eglinton West}} will be renamed "Cedarvale" (after [[Humewood–Cedarvale|the Cedarvale neighbourhood]] to the south) when it becomes an interchange station with the opening of [[Line 5 Eglinton]].<ref name="CityNews-2023-05-16">{{Cite web |first=Michael |last=Ranger |url=https://toronto.citynews.ca/2023/05/16/eglinton-crosstown-metrolinx-ttc-crosslinx/ |title=Eglinton Crosstown won't open until 2024, construction group to take legal action: Metrolinx |website=CityNews |date=May 16, 2023 |access-date=May 16, 2023 |archive-date=May 16, 2023 |archive-url=https://web.archive.org/web/20230516163903/https://toronto.citynews.ca/2023/05/16/eglinton-crosstown-metrolinx-ttc-crosslinx/ |url-status=live }}</ref>

As a result of the [[George Floyd protests in Canada|George Floyd protests]], Toronto City Council indicated in 2020 that they intended to rename Dundas station because its namesake, [[Henry Dundas, 1st Viscount Melville|Henry Dundas]], delayed the [[British Empire]]'s abolition of slavery in the 1700s.<ref>{{cite web |title=Toronto City Council approves "Sankofa Square" as new name for Yonge-Dundas Square and initiates plans to rename other City assets that include the name Dundas |date=December 14, 2023 |url=https://www.toronto.ca/news/toronto-city-council-approves-sankofa-square-as-new-name-for-yonge-dundas-square-and-initiates-plans-to-rename-other-city-assets-that-include-the-name-dundas/ |publisher=City of Toronto |access-date=December 20, 2023}}</ref><ref>{{cite news |title=Thousands sign petition to rename Dundas Street, named for politician who delayed abolition of slavery |url=https://www.cbc.ca/news/canada/toronto/dundas-street-renaming-petition-1.5606540 |access-date=December 20, 2023 |work=CBC News |date=June 10, 2020}}</ref> {{As of|2025}}, however, the Dundas name has yet to be changed.

[[File:TTC Line1 WallDestinationSign.jpg|thumb|right|Platform wall sign in {{stl|TTC|Downsview Park}} indicating {{stl|TTC|Union}} as a terminal station]]
Southbound station platform signage on both branches indicates {{stl|TTC|Union}} as a terminal station due to it being located at the southernmost point of the line's rough 'U' shape, where it turns northward when travelling along either branch. The train destination signs display the northwestern terminal station as "Vaughan" rather than its full name, Vaughan Metropolitan Centre, for brevity. Until the 1990s, train destination signs read "VIA DOWNTOWN" after the terminal station name.<ref>{{cite web |url=https://transittoronto.ca/photos/images/ttc-yorkdale-nb-19780630.jpg |work=Transit Toronto |title=Yorkdale: ''Yorkdale Station Image Archive'' |access-date=April 25, 2018 |archive-date=October 16, 2022 |archive-url=https://web.archive.org/web/20221016172439/https://transittoronto.ca/photos/images/ttc-yorkdale-nb-19780630.jpg |url-status=live }}</ref>