The rail route in Philadelphia where an Amtrak train derailed Tuesday (above) was not governed by an advanced safety technology known as positive train control meant to prevent high-speed derailments.

Trains on numerous Metra lines were delayed Wednesday due to issues with Positive Train Control systems, the agency said. According to an alert sent out just before 6 p.m., those issues were causing ...

Los Angeles firefighters survey the wreckage of a commuter train that collided head-on with a freight train in the Chatsworth neighborhood Sept. 13, 2008. The accident compelled Congress to demand ...

Metra commuters could face significant delays during the Wednesday evening rush due to a systemwide positive train control issue. Positive train control systems are designed to automatically stop ...

The rush to launch service on a new, faster Amtrak route near Seattle came at a deadly cost — critical speed-control technology that could have prevented a derailment was not active before the train ...