The engine left the track further down the track at the curve. Once that happens the passenger cars will buckle and jump track causing the following cars to derail as well further back.
The NTSB has stated that the train was going 80mph on a 30mph curve. That’s all I need to know for now.
Not quite...
An Amtrak train that derailed Monday during its inaugural ride on a new line in Washington state was traveling at 80 mph in a 30 mph zone, the National Transportation Safety Board said, citing data recorder information.