Ключевые слова: 20, attention, background, blue, bump, caution, city, clouds, color, control, copy, day, design, different, distance, drive, driving, group, information, law, many, maximum, metal, object, outdoors, outside, public, red, regulation, regulatory, road, rule, shape, sign, signpost, signs, sky, space, speed, steel, street, sunny, symbol, text, traffic, transportation, trees, view, white, yellow,