RailPlan International (RPI) secured a technical services contract with the Southern California Regional Rail Authority (SCRRA), and Metrolink’s team developing positive train control (PTC), to provide modifications to the PTC powering system in its fleet of Hyundai Rotem Cab Cars.

To ensure consistent behavior of the PTC powering system, RPI will provide modifications to 57 of the 59 Hyundai Rotem Cab Cars in Metrolink’s fleet. Those modifications aim to prevent incomplete software uploads by providing sufficient battery life. Two Metrolink cars already have the modification being used in SCRRA PTC testing.

Because complex onboard software systems are a main component of the PTC system, providing an optimal power source for sufficient download time is vital. With the challenges of managing differing powering systems from divergent fleets, maintaining consistent communications between equipment and Back Office Servers (BOS) must be optimum.

RailPlan’s wiring modification to the SCRRA Rotem Cab Cars will bring Metrolink’s battery wiring systems into compliance with applicable laws, regulations, standards and recommended practices of the U.S. DOT, FRA, FTA, South Coast Air Quality Management District, APTA, Association of American Railroads and the State of California.