Ключевые слова: abstract, alert, art, attention, background, blue, bright, caution, clean, clipart, color, concept, danger, design, element, exclamation, glossy, graphic, hazard, icon, idea, illustration, image, information, isolated, mark, modern, point, pole, red, road, safety, shape, shiny, sign, signal, simple, sky, smooth, symbol, traffic, triangle, triangular, vertical, warning, white,