Ключевые слова: alert, american, beacon, caution, change, clear, closeup, crossing, danger, delay, direction, flashing, gate, go, hazardous, lights, mainline, overhead, railroad, railroad crossing, railroad track, railway, railyard, red, remote control, roads, roadway, route, safety, signal, signs, stop, street, switch, tracks, traffic, train, transportation, wait, waiting, warning,