The figure shows both plan and cross sections of a CSA Standard Tactile Walking Surface Indicator and states:
- Install tactile walking surface indicators in a manner that avoids interference from an irregular walking surface, and does not create a tripping hazard.
- Base surface ideally level with adjacent surfaces but never more than 3 mm above or below adjacent surfaces.
- Surface to be slip-resistant.
- Tactile walking surface indicators to be colour contrasted with adjacent surfaces.