[RayChuang88]

In Japan, unless the train was designed for one-man (known in Japan as wanman) operation, they usually two train crew: a driver in the front and a conductor at the end of the train. And the driver on main lines have a lot of safety systems operating to protect the train, especially the automatic train stop (ATS) sensors on the track to detect excessive speed or overrunning red signals.

What Amtrak must install are systems to monitor if the train is going on the track at excessive speed or running a red signal.

[Olog-hai]

Reportedly, ACSES (or the Advanced Civil Speed Enforcement System, Amtrak’s version of automatic train stop) was installed on that part of the line, but reportedly not switched on.

And remember, any system can be defeated if one’s will is to harm.

US regulations make such systems very expensive to install and maintain.