There are two types of tiles: direction indicator (Corduroy) and warning indicator. Tactile tile dimensions are length, width and thickness (Blister). Dimensions should be reported in this established order. Corduroy tactile tile: with a surface finish based on continuous, straight and parallel grooves, whose maximum depth is 5 mm, being the rest of features indicated on each country’s standard. Blister tactile tile: made with buttons in a maximum height of 5mm and the rest of features will be indicated on each country’s standard.