bright yellow tactile paving for the visually impaired

sidewalk city tile blind street surface pedestrian pattern way urban floor sign line texture ground footpath walkway background design blindness direction safety road braille pavement yellow tactile paving outdoor mark disability help symbol path architecture person information rough walk assistance abstract universal detectable block people stripe brick handicap black guidance navigation warning method indicator concrete striped closeup train signpost backdrop security row open public architectural common concept decadence decline defile devious soil essence filthy bright visually impaired tiles are laid