crossroads with safe pedestrian crossings, floor tiles and path for the visually impaired blind, the integrated tactile signal and

blind visually impaired lve loges veterinary evolution safe sidewalks pedestrian crossing safety urban intersection road traffic rules pedestrians disability visual tactile tiles foot orientation move forward stop structure blindness concrete stone outdoor background path asphalt pavement surface bumps sidewalk textured floor paving notice braille people minas gerais mosaic material logesvetevolution system consists series reliefs grooves codes dimensions easily perceived plantar sense rough non-slip bottom plate smooth white stick slide codes tapered sides constitute impediment discomfort walking motor disabilities details