Ключевые слова: alert, alertness, arrival, automatic, barrier, caution, communication, control, crossing, departure, direction, equipment, guide, industrial, infrastructure, intersection, iron, journey, junction, level, lights, management, mechanism, metal, mode, operation, public, railroad, railway, red, safety, schedule, signal, signalization, signals, steel, stop, system, technology, timing, track, tracks, traffic, train, transportation, travel, urban, warning,