This game had an incredible amount of depth! It took me a bit to get my head wrapped around it, but when I figured it out, it made a lot of sense. I just wish the map was showing more information, like a real plan of the train tracks and junctions.
I was playing in Chrome, and my game did crash at one point during the final exam. I also noticed that when I tried to fully stop a train, it would sometime start moving without any input, which caused a lot of unexpected train crashes.
Anyhow, congrats on submitting to the jam!