Last week's Amtrak crash outside Philadelphia that killed 8 people has re-ignited the call for a nationwide network of “positive train control” systems. Voices have been clamoring about ...

You don’t need a university degree to become a train controller, and it takes five weeks of training to learn the key skills, followed by 12 weeks of supervised on-the-job experience.

Neil Brown, a mechanical systems manager with Metrolink, explains in 2012 the workings of positive train control technology installed aboard a commuter train in Los Angeles.