Positive Train Control System

October 24, 2015, 11am PDT
Agreement has been reached by Congress to extend the vital but costly safety system said to prevent many train crashes. Had it not been reached, freight railroads warned they would shut down, as would passenger rail lines running on their tracks.
The Hill
December 5, 2013, 7am PST
As federal investigators focus on the likelihood of human error being the cause of the Dec. 1 derailment that killed four passengers, attention has been placed on the federal requirement for all railroads to install positive train control systems.
The Wall Street Journal - New York
February 14, 2012, 10am PST
A cutting-edge railroad collision avoidance system is being installed in Los Angeles. Dan Weikel and Richard Simon examine the system, and the reasons why the federal government is backing down from requirements to install the system nationwide.
Los Angeles Times