Toronto's Line 1 is the Yonge-University subway line, running through the city's main north-south corridor and turning west along University Avenue downtown, with its northern terminus in Vaughan. Announcements naming the direction of travel are a routine part of riding the TTC, helping passengers confirm they are on the correct train before doors close. Short clips like this circulate online because they are instantly recognisable to Toronto commuters and easy to drop into local videos, transit edits and jokes about getting around the city.