How Positive Train Control Works

by @lamthuyvo May 14, 2015 5:00PM ET

Rail experts believe PTC would have prevented Tuesday’s deadly Amtrak derailment.

Topics:
Philadelphia
Pennsylvania
U.S.

Positive Train Control (PTC) is a safety system that monitors train position and speed and feeds the information back to the locomotive in real time, helping engineers stay aware of speed limits and automatically reducing train speed if necessary.