Looks like a grain train shuttle operation. Like those little roofs at the car ends, wonder what they are for? Nice track as well, for a rural operation that train moves pretty fast.
If that 90 sigh was a speed sign fot the curve and was in metric, it would be 55 mph. Nice operation in my opinion.
Wonder if they are to protect the air resevior/brake equipment from overfill in a moving loading operation.
At about 6:05, as the train starts moving, next to the rectangular and diamond-shaped signs there is a little sign or signal or something that keeps popping up and down. What is that?
(edit): Judging by its location it seems to have something to do with the switch.
I hope I’m wrong, but it looks like an unsecured switch throw lever…