Ключевые слова: 30, area, background, badge, black, car, careful, danger, drive, forbidden, highway, icon, information, isolated, kilometers, km, kmh, law, limit, limitation, maximum, miles, mph, number, police, post, regulation, restrict, restricted, restriction, road, rule, safe, safer, safety, sign, slow, speed, speed limit, street, symbol, thirty, traffic, transport, transportation, traveling, violation, warning, zone,