The Yonge-University Subway Line is a major rapid transit line in Toronto, Canada. It runs from the northern suburb of Vaughan to the southern part of downtown Toronto, covering a distance of approximately 30 kilometers. This line is part of the Toronto Transit Commission (TTC) and serves as a vital transportation route for commuters and residents. Opened in 1954, the Yonge-University line is one of the busiest subway lines in North America. It connects with several other transit lines and key locations, including Union Station, York University, and Eaton Centre. The line features a mix of underground and above-ground sections, providing efficient service to millions of riders each year.