Ключевые слова: attention, barricade, barrier, bell, cables, caution, check, cross, danger, departure, destination, direction, electric, flash, intersection, journey, lamp, light, lines, pass, rail, railroad, railway, road, safety, sign, signal, station, stop, suburban, symbol, system, track, traffic, train, tram, transport, transportation, travel, trip, trolley, via, wait, warn, way,