The Amtrak passenger train was going more than 100 miles an hour when it derailed north of Philadelphia. Positive train control could have automatically slowed the train down on that stretch of rail.
The Amtrak passenger train was going more than 100 miles an hour when it derailed north of Philadelphia. Positive train control could have automatically slowed the train down on that stretch of rail.
$4
per month
$65
per year