https://www.youtube.com/watch?v=hfQTjvFFMUY
The Biggest Pain Point of Calgary's CTrain (and how to fix it for less than the cost of a subway) https://www.youtube.com/watch?v=ObWf2SwO-OY
The Evolution and Review of the Calgary C-Train https://www.youtube.com/watch?v=th44KLfAwJA
