The Advanced Civil Speed Enforcement System (ACSES) is a positive train control system used on Amtrak’s North East Corridor (NEC) developed by PHW, Inc. To perform maintenance activities, the system can be downloaded from the On Board Computer (OBC) and the events can be displayed on a laptop using the ACSESView software. This paper will present how the software is used by maintenance personnel and engineers to troubleshoot and maintain the system.

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