Wolf Blitzer delivers the most important breaking news and political, international, and national security stories of the day. Tune to The Situation Room weekdays 5-7pm ET on CNN.
We know that the engineer of the Metro North train that crashed in New York on Sunday was "in a daze" when he entered a 30 mph-zone at 82 mph, but new questions are being raised as to whether he will face charges for criminally negligent homicide. CNN's Nic Robertson reports.
In July, a speeding train killed 77 near Santiago de Compostela, Spain. Earlier in the same month, a freight train carrying crude oil derailed in Lac-MÃ©gantic, Canada, killing 47. And just last May, two commuter trains in Connecticut collided, injuring more than 70. What is it with trains and safety? CNN's Tom Foreman takes a look at what's behind most train wrecks.
Wolf Blitzer interviewed the NTSB's Earl Weener, who gave a preliminary breakdown of the New York City train crash that killed four passengers. Weener revealed that while the train was speeding through a 30 mph-zone at 82 mph when it derailed, investigators still do not know if human error was involved.