Access Tile Replaceable Cast in Place Tactile Wayfinding Bars Walking Surface Indicators (TWSI) have combined processing, material technologies, and engineered polymers with intelligent, durable design to create the ultimate replaceable tactile walking surface indicators. The Replaceable Cast in Place ISO wayfinding bars tiles are installed directly into wet set concrete, incorporating the tactile warning systems' industry-leading replaceability feature. Access Tile Replaceable Cast in Place code-compliant wayfinding bars are lightweight and durable, perfect for curb ramp and sidewalk designs. Access Tile Cast in Place wayfinding wet concrete comply tactile indicators are available to be used in concordance with attention domes, creating barrier-free pathways and ensuring all pedestrians are able to navigate around their environment safely.