Ключевые слова: abstract, arrow, asphalt, attention, background, beware, black, blank, business, caution, construct, construction, danger, dangerous, design, diagonal, dirt, dirty, drive, grainy, grunge, grungy, hazardous, illustration, industry, line, old, outdoors, pattern, poster, road element, safety, sharp, sign, street, stripe, striped, symbol, technology, texture, traffic, transport, transportation, wall, wallpaper, warning, yellow,