Ключевые слова: airline, alert, area, bridge, cross, crosswalk, danger, direction, ferry, ferry boat, ferry ship, footpath, grill, ground, highways, icon, lane, line, marker, narrow road, park, pavement, pedestrian, people, program, road, safe, security, shipping, sign, solution, symbol, tourist, transport, transportation, travel, urban, walk, walking, warn, water way, way,