Sorry, interesting video, to say the least....but I am kind of lost.
1) this does not look like a switch/turnout
2) is it really something designed to derail a train?
I found this bit of info to help me understand:
"The second type of derail is the "split rail" type. These are basically a complete or partial railroad switch which directs the errant rolling stock away from the main line. This form is common throughout the UK, where it is called trap points or catch points."
That leads me to think that:
1) the train in the video backed up to a point, then instead of going forward, went backward by accident
or
2) it was supposed to back up, but even though it does not look like a switch/turnout to me in the video....it really is one! And it was not aligned properly.
I am thinking 2. Am I on "the right track" here?
Sorry for the ignorance. It still was interesting to watch.
Greg