Invensys Rail's PHW subsidiary has been awarded a sub-contract to install a microprocessor-based PTC system onboard all of Southeastern Pennsylvania Transportation Authority's transit rail vehicles.
The SEPTA PTC system will be based on the ACSES II system. PHW’s onboard ACSES OBC will be combined with PHW’s 9-Aspect ATC equipment, which will replace the existing Cab Signal System (CSS) installed on SEPTA rail vehicles.
The onboard PTC system will communicate with wayside locations via track circuits, track-mounted transponders and an onboard, 220 MHz radio system. A new Aspect Display Unit will be provided that will display both PTC and cab signal information to the train engineer.