Ключевые слова: allow, background, black, city, color, concept, control, danger, direction, electric, electricity, equipment, forbidden, front, go, green, guidance, highway, icon, illuminated, illustration, image, intersection, isolated, lamp, light, multiple, red, regulate, road, safety, semaphore, sequence, shiny, sign, signal, speed, stop, stoplight, street, symbol, traffic, transport, transportation, travel, urban, warning, white, yellow,