Lawyers for passengers injured in the deadly Amtrak crash in Philadelphia last year say federal investigators failed to consider alternate reasons why the engineer may have sped up the train.
The National Transportation Safety Board said Tuesday that Brandon Bostian lost track of where he was on a sharp curve because he was likely distracted by a disabled commuter train.
That train had been struck by rocks in the neighborhood that Bostian was approaching.
Lawyer Thomas Kline wonders if he sped up to get through the area quickly and avoid being "rocked."
Kline and co-counsel Robert Mongeluzzi believe Bostian was reckless in driving twice the speed limit with hundreds of lives at stake.
They say vehicle drivers would be considered reckless if their minds drifted and they doubled their speed.