Ключевые слова: barrier, blind, blindness, bright, city, cobblestone, cover, disability, disabled, disablement, emblem, equipment, floor, flooring, free, guide, guiding, handicapped, inability, incapacity, independent, invalid, lines, navigation, nobody, opportunities, orientation, orienteering, paving, people, physical, pointer, road, route, sidewalk, sign, stone, street, stroller, symbol, system, tactile, tape, touch, traffic, vision, way, weak, yellow,