Ключевые слова: ahead, attention, background, beige, car, caution, concept, danger, dangerous, descent, direction, drive, europe, generated, grade, gradient, green, hazard, highway, hill, icon, illustration, image, isolated, pattern, percent, reflection, road, roadside, safety, seamless, sign, slope, steep, stop, street, symbol, traffic, transport, transportation, travel, triangle, triangular, uphill, warning, way,