The National Transportation Safety Board says a New York commuter train was traveling 82 miles per hour when it hit a curve with a speed limit of 30 miles per hour before it derailed Sunday.
Four people were killed in the accident; 67 were injured.
An NTSB official told reporters the throttle was cut and brakes applied "very late in the game."
The crash is still under investigation.
Train expert David Schanoes, who used to work at major New York City commuter railroad, is OutFront.