Septa will begin PTC operation on the Warminster Regional Rail Line from April 18, becoming the first commuter rail operator in the United States to commission a PTC system based on Amtrak's Advanced Civil Speed Enforcement System (Acses).

Wayside equipment is being installed by Ansaldo STS under a $US 98.7m contract awarded in February 2012 while Siemens is replacing Septa's existing cab signalling system with an Acses onboard computer and nine-aspect automatic train control equipment.