Ключевые слова: assistance, background, blind, blindness, block, braille, braille block, brick, buta, closeup, crossing, danger, design, direction, disability, disabled, dot, edge, floor, footpath, ground, help, modern, outdoor, pathway, pattern, pavement, paving, pedestrian, people, road, safety, sidewalk, sign, street, symbol, tactile, texture, tile, traffic, transportation, trotoar, tunanetra, urban, walkway, wall, warning, way, yellow,