The Yonge-University Subway is a major rapid transit line in Toronto, Canada. It is part of the Toronto Transit Commission (TTC) and connects the northern suburb of Vaughan to the southern part of downtown Toronto. The line runs primarily along Yonge Street and University Avenue, making it one of the busiest subway routes in North America. Opened in 1954, the Yonge-University Subway has expanded over the years and now includes multiple stations. It serves as a vital transportation link for commuters, students, and tourists, providing access to key areas such as the University of Toronto and Toronto Eaton Centre.