Ключевые слова: accident, alarm, asphalt, attention, care, careful, caution, cone, construction, crash, danger, dangerous, direction, drive, emergency, empty, equipment, forward, glow, group, hazard, highway, isolated, isolation, line, orange, plastic, red, reflective, road, safe, safety, sign, signal, single, speed, stop, street, striped, symbol, traffic, transport, transportation, travel, unsafe, warning, way, welfare, white, work,