Ключевые слова: art, background, black, blue, city, color, concept, control, danger, design, direction, electric, element, equipment, forbidden, go, green, guidance, highway, icon, illuminated, illustration, image, intersection, isolated, lamp, light, object, red, regulate, regulation, road, safety, semaphore, set, shiny, sign, signal, stop, stoplight, street, symbol, traffic, transport, transportation, urban, warning, white, yellow,