Ключевые слова: background, barrier, blind, blindness, braille, city, construction, cover, disability, disabled, disablement, equipment, floor, footpath, ground, guide, handicapped, help, inability, incapacity, independent, invalid, lines, navigation, orientation, orienteering, outdoor, path, pattern, pavement, paving, people, physical, pointer, public, road, route, shade, shadow, sidewalk, street, stroller, sun, sunlight, surface, tactile, tape, texture, touch, track, traffic, urban, walkway, way, yellow,