Going down to a railroad crossing in Agency, Iowa to see the westbound "California Zephyr" on June 6, 2011, I found an odd sight. The crossing gates kept going up and down with no train in sight. The first clip is just one cycle out of many of the crossing gates rising and falling. I was later told that this was caused by overheating in the crossing shed.
The second clip is Amtrak #5 passing through the crossing. After which the gates come back down on a car that had been waiting for Amtrak to go by.
The crossing was fixed by the next day.
Engines:
Amtrak 173 GE P42DC
Amtrak 123 GE P42DC
