Ключевые слова: abstract, allowed, arrow, background, black, block, blue, car, city, clouds, concept, construction, control, cross, digital, direction, disallow, disapprove, driveway, electric, entrance, entry, forbidden, go, guidance, led, light, no, no entry, object, passing, railway, red, road, safety, sign, signal, sky, station, stop, street, symbol, toll, traffic, transport, transportation, tunnel, urban, warning, wrong,