Positive Train Control
The commuter train network that crisscrosses Southern California now has an advanced crash-avoidance system on all the tracks it owns.
The new technology is called Positive Train Control (PTC).
In the wake of Sunday’s deadly train derailment in New York, pressure is increasing on commuter rail systems around the country to speed up installation of a high-tech accident-prevention system.
Federal transportation officials on Monday introduced a new system designed to prevent head-on train collisions like the Metrolink disaster four years ago.