intersection of tactile paving on ground surface as guidance or warning sign to help visually impaired or blind pedestrians.

alert bar blind blister block blue building bump bus cone cross crossing detectable domes down facility footpath grade guidance guide help impaired indicator intersection long lot netra off offset parking pattern pavement paving pedestrian platform public rail ramp road section sidewalk sign signage situation stair station street subway surface system tactile tenji textured train truncated tuna visually walking warning yellow