Seems so harmless walking over a small railroad bridge with a train parked in plain view,
only ten feet, to walk on, and then walk off.
But the train in front of them is not the only known danger. They are walking on a downward grade with three industries behind them one with a track mobile for switching cars. If a car got loose they would never see it, or hear it for they never looked behind them. "When ever on or near the tracks always expect a train from any direction"