UP's MNYGJ knocks down a clear (green) signal at the east end of Troublesome. This exact location was the scene for a terrible tragedy in the 1950s. The crew on an eastbound Rio Grande manifest missed an Approach (yellow) signal at the west end of Troublesome. The first signal that wasn't green since departing Bond. A westbound Rio Grande manifest was entering the siding here at the east switch for a meet. Because the eastbound did not see the yellow signal, the engineer was not slowing to come to a stop at the red signal here at the east end. By the time the crew realized it and put the train in emergency, it was too late. The eastbound impacted with the westbound, causing a significant derailment. This led to Rio Grande producing its own 22-minute training/safety video about the incident. The video was titled "The Trouble at Troublesome". The invention and implementation of PTC should, in theory, prevent that type of accident from ever happening again.
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