WCAU NBC10 News At 5pm February 21, 2017
57 derailed. Reporter the derailment causing a third train on another track to collide. Septa says an electric signaling system should have prevented this. Theres an automatic train control system, its a signal system, the trains move under signal authority and the signal system will keep the trains separated. Reporter the ntsb will have to determine why that signal system failed. Im told those trains were going at max ten miles per hour. Theres one train operator still in Critical Condition, another less seriously injured as well as two passengers who were actually not supposed to be on board...