Ключевые слова: allow, attention, caution, check, city, colorful, concept, conceptual, control, controler, cross, danger, empty, environment, go, information, junction, lamp, light, lit, object, pedestrian, red, regulation, road, safe, safety, security, semaphore, set, sign, signal, sky, space, stop, stoplight, street, symbol, town, traffic, trafficlight, transport, travel, type, urban, walk, warning, way, yellow,