Ключевые слова: arrow, beware, blind, blindness, braille, caution, city, concept, direction, directional, floor, footpath, ground, handicap, language, lifestyle, mark, modern, outdoor, pattern, pavement, pedestrian, platform, public, railway, sidewalk, sign, station, street, surface, symbol, tactile, texture, tile, track, train, train station, urban, walkway, way, yellow,