The National Transportation Safety Board (NTSB) named crew member fatigue as the probable cause of a 2014 Union Pacific (UP) Hoxie, Ark., accident that killed two crew members and seriously injured two others.
Two Union Pacific trains collided in the early hours on Aug. 14, 2014, while traversing a turnout control point. NTSB's report on the accident found that the northbound crew had no indication of the impending collision and that the southbound train conductor was likely asleep at the time of the collision. The report also cited a lack of federal regulations governing sleep disorder and fatigue modeling tools as a contributing factor to the accident.
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