The crew operating a freight train that derailed in East Palestine, Ohio did not receive a critical warning about an overheated axle until just before dozens of cars went off the tracks, according to United States federal safety investigators.
An engineer slowed and stopped the train after getting a “critical audible alarm message,” according to a preliminary report published Thursday by the National Transportation Safety Board (NTSB). The crew then saw fire and smoke and alerted dispatch of a possible derailment, the report said.
The axle investigators are focused on had been heating up as the train went down the tracks, but did not reach the threshold for stopping the train and inspecting it until just before the derailment, the report said. The train was going about 75 km/h (47 mph) at the time, just under the speed limit of 80 km/h (50 mph), according to safety investigators.
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