A signal outage that left thousands of commuters stranded or delayed at Union Station Thursday was caused by "human error," Amtrak's CEO announced Friday. "Amtrak has completed a root cause ...

“Designing Control Loops for Linear and Switching Power Supplies” is the latest book from Christophe Basso, a past contributer to Power Electronics. This book focuses on what engineers really ...

The derailment in eastern India that killed 275 people and injured hundreds was caused by an error in the electronic signaling system that led a train to wrongly ...

An electronic signaling system error led to the train derailment in India that killed nearly 300 people and injured hundreds more, officials said Sunday. The error ...

Much of the old signal system is run from a network of underground control towers that sit beside the tracks. Inside each tower are operators like Ms. Pryor who change signals and switches.