Ключевые слова: arrow, attention, barricade, barrier, boundary, car, caution, city, color, concrete, cone, design, different levels, direction, empty, entrance way, equipment, footpath, gateway, line, mark, nobody, object, orange, outdoors, pedestrian, plastic, public, red, road, row, rubber, safety, security, separation, sidewalk, sign, space, street, symbol, traffic, transport, transportation, urban, vehicle, walkway, warning, way, white,