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Keywords: High Accuracy Global Positioning System, HA-GPS, GPS, base station, railroad, Nationwide Differential Global Positioning System, NDGPS, Positive Train Control, PTC, Vital Positive Train Control, VPTC, Differential Global Positioning System, DGPS
Keywords: High Accuracy Nationwide Differential Global Positioning System, HA-NDGPS, High Accuracy Global Positioning System, GPS, Positive Train Control, PTC
Keywords: Centralized interlocking system, CIXL, Quasi-Moving Block, QMB, Positive Train Control, PTC, Communications-Based Train Control, CBTC, control point, CP, Wayside Status Messages, WSM, railroad, train control
Keywords: Crashworthiness, occupant protection, full-scale train-to-train test, crash energy management, crush zones, rail cars, occupant survivability, collision, injury, impacts
Keywords: Passenger railcar, workstation tables, energy absorption, interior crashworthiness, injury criteria, abdomen injury, anthropomorphic test device, ATD, THOR-50M ATD, train collision safety