Ключевые слова: abstract, background, blind, blindness, circle, city, closeup, concrete, design, direction, disability, disable, dot, floor, foot, footpath, ground, handicap, hazard, help, line, mark, modern, nobody, outdoor, pattern, pavement, paving, pedestrian, people, road, rough, sidewalk, sign, street, surface, symbol, tactile, texture, textured, tile, truncated, urban, walk, walkway, wallpaper, warning, way, yellow,