Ключевые слова: alternating, caution, communication, control, crossing, danger, drive, dusk, electric, equipment, flashing, forbidden, glowing, grade crossing, halt, hazard, illuminated, instruction, journey, junction, lamp, level crossing, light, lit, no, prohibit, railway, red, round, safety, semaphore, shining, sign, signal, signaling, sky, stop, traffic, train, transport, transportation, travel, twilight, two, warning,