Ключевые слова: abstract, alert, asphalt, attention, backdrop, background, banner, black, border, caution, closeup, construction, danger, design, diagonal, dirty, grunge, hazard, hazardous, industrial, industry, line, metal, notice, old, pattern, pavement, problem, road, rough, safety, sign, stained, street, striped, stripes, surface, symbol, texture, textured, traffic, transport, transportation, under, urban, wall, wallpaper, warning, weathered, yellow,