Ключевые слова: accident, alert, asphalt, attention, background, barrier, caution, cone, construction, control, danger, design, emergency, equipment, forbidden, hazard, highway, lane, line, marking, object, orange, plastic, protection, red, reflective, repair, road, roadwork, safe, safety, security, series, shiny, sign, signal, site, stop, street, stripe, striped, symbol, traffic, transportation, walk, warning, way, white, work,