Ключевые слова: allow, amber, background, blue, change, city, cloud, color, colorful, concept, control, crossroad, drive, environment, equipment, go, green, hanging, information, isolated, light, no, object, protection, ready, red, road, rostovondon, russia, safe, safety, semaphore, set, sign, signal, sky, space, stop, street, traffic, transport, transportation, travel, type, urban, warning, way, yellow,