From the CNN article...

Quote
The NTSB hopes video from two cameras on the train will yield clues


This probably means there was a camera on the nose looking forward (that's the one that kills lawsuits from drivers who run crossing gates or signs and get hit) and an inward facing camera. They don't have the option of shutting them off, like some other cameras that have been in the news lately.

Lunatic fringe....we all know you're out there.