Toronto Transit Commission’s Andy Byford gives us a tour of Toronto’s underground subway tunnels. https://www.youtube.com/watch?v=Z8qwkjW1uIM
https://www.youtube.com/watch?v=UvsBg1-h4Xs
https://www.youtube.com/watch?v=JRpRxT9s--I The history and the future expansion plans for the TTC Toronto Subway
https://www.youtube.com/watch?v=pF1RH5BzDjw little-known facts about our Toronto subway system
