Positive train control (PTC) automatically slows or even halts trains that are moving too fast or heading into a danger zone.
At least seven people were reported killed and dozens injured as a result of the derailment Tuesday night.
At least six people were killed and dozens injured Tuesday night when an Amtrak train carrying over 200 people derailed in Philadelphia.
Injuries were reported, though the exact numbers and names of the victims were not disclosed.
The Metro-North commuter train struck a car about an hour north of New York City Tuesday evening, with the MTA reporting "numerous confirmed fatalities."