The National Transportation Safety Board says that preliminary data shows that the Metro-North train that derailed in the Bronx was traveling 82 miles per hour before derailing in a 30-mile-per-hour zone.
NTSB official Earl Weener said that the throttle of the train was reduced to idle approximately six seconds before the rear engine of the train came to a stop.
Weener said that the brakes were fully applied approximately five seconds before the train came to a stop.
Weener said that the NTSB is not aware of any problems or anomalies with the brakes at this point, but it remains unclear if there were problems.
The zone leading up to that 30-mile-per-hour curve was a 70-mile-per-hour zone, according to Weener.
According to Weener, it is still unclear whether human error or faulty equipment resulted in the train’s derailment.
He said that officials need to understand how the brake system was working during the earlier part of the trip, when the train made nine stops.
According to Weener, the NTSB began interviewing the engineer and the train’s three other crew members Monday.
All seven cars of a southbound train on Metro-North’s Hudson line derailed just north of the Spuyten Duyvil station in the Bronx early Sunday morning.
Four people were killed, and more than 60 were injured.
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