Watch the CBS news tonight. I just watched the WBZ news, it said the train was going 107 in a 50 zone & the engineer was refusing to cooperate with the police.
That's a perfect example of irresponsible TV journalism. First of all, the "police" are not qualified to investigate railroad accidents. From experience, more time is spent at these incidents, arguing over who's investigation takes precedence, than it takes to investigate the incident.
When an occurrence such as this takes place, there are procedures in place to determine the cause of the incident and determine responsibility, if any. The local and state government workers all want to be involved, and literally get in the way and impede the investigation, inadvertently destroy pertinent evidence, and making reckless and inflammatory remarks, which are then further embellished by a sensation driven news media. It's bad enough when the "Clown Show" from the NTSB appears and set up their impromptu field TV studio, to feed dribble to the media, but at least the NTSB employs competent qualified investigators who work behind the scene to assist in determining the cause.
Once I saw the photos of where the locomotive and cars came to rest, it was obvious to me that excessive speed was the cause. Then again, I spent 17 years investigating accidents, determining cause, and implementing corrective action. I was also certified and qualified to run trains over that territory.
The so called event recorder records numerous functions that are downloadable, so this factor should have been known to the Amtrak team early in the investigation. The remaining question is how this happened, with all the proper safety provisions in place.
Since the physical infrastructure at the location is well maintained, track structure should not be a factor. The curve has been there for over a hundred years, so the qualified engineer is aware of it. The locomotive appears to be one of the new motors recently acquired from Siemens , the locomotive is equipped with cab signals and train control equipment. I'm not sure if Amtrak's version of Positive train control has been implemented at that location, but implementation was already in process when I retired seven years ago, if it was implemented, then it should have applied the train braking systems if the engineer was inattentive or incapacitated.