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Keywords: Quasi-Moving Block (QMB), next generation track circuit, NGTC, track circuit enhancements
Keywords: MAIN, MAIN-CDX, PTC, ITC, ITCSM, troubleshooting, interoperability, CONOPS, GUI, API, manual-to-manual, manual-to-auto, auto-to-manual, auto-to-auto
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: Freight railroads, regional railroads, short line railroads, safety culture assessment, safety culture measurement, state of rail industry, human factors, safety culture, safety, railroad