Ключевые слова: allow, background, black, blue, car, change, city, color, concept, control, controler, cross, crossroad, drive, go, green, information, isolated, junction, light, no, object, protection, ready, red, safe, safety, semaphore, set, sign, signal, sky, stop, street, traffic, trafficlight, transportation, type, urban, warning, way, yellow, yes,