Overspeed focus in Amtrak derailment

The curve leading onto the I-5 bridge had a 50 km/h speed limit. (Photo: John Froschauer/AP/REX/Shutterstock)

USA: Excessive speed has been identified as a key factor in the derailment of Amtrak Cascades’ Seattle – Portland train 501 near Tacoma on December 18, according to the National Transportation Safety Board.

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