Ключевые слова: ahead, alertness, blue, bollard, clear, clipping path, cloud, color image, concept, copy space, day, diamond shaped, digitally generated image, fast, fastest, full, hazard sign, isolated, limit, metal, nobody, number 1, road sign, road warning sign, safety, shine, sign, single object, sky, skyline, speed, square, text, topic, trip hazard sign, warning sign, yellow,