Ключевые слова: allow, background, blue, car, change, city, color, colorful, concept, control, cross, danger, drive, environment, equipment, go, illustration, information, isolated, junction, light, object, red, road, safe, safety, semaphore, set, shiny, sign, signal, sky, stop, street, symbol, traffic, trafficlight, transportation, travel, urban, walk, warning, way, yes,