Ключевые слова: accident, asphalt, black, care, careful, caution, cone, construction, crash, danger, direction, drive, emergency, empty, fluorescent, forward, glow, group, hazard, highway, isolation, line, orange, plastic, red, reflective, road, safe, safety, sign, single, speed, striped, traffic, transport, travel, unsafe, warning, way, welfare, white, work,