Ключевые слова: accident, attention, background, beware, buggy, careful, case, caution, clean, danger, falling down, floor, germany, icon, information, maintenance, passenger, people, pram, precaution, prevention, public, rail, railway, railway station, risk, road, safety, sign, signal, slanted, slip, slippery, station, stop, stroller, stumble, stumbling, symbol, track, traffic, trail, train, triangle, warning, wet, work, yellow,