TSGIs are used to warn people who are blind or vision impaired that they are approaching a hazardous situation such as a set of stairs, a ramp or an overhead obstruction that they might bump into or injure themselves on. TGSIs are designed so that they may read either tactually underfoot through the tip of a long cane, or visually because of a high luminance contrast which means that the colour of the TGSIs stands out compared to the surrounding floor / ground surface. Code Requirements
The Building Code of Australia (BCA) specifies where TGSIs must be provided at D3.6 and refers to and requires compliance with the relevant parts of AS1428.1. This includes: stairs, escalators, travelators, ramps and in situations where there are overhead hazards less than 2m above the ground or floor surface. TGSIs would also provide valuable safety information in places such as at grade road crossings found in places such as hotel driveways. AS1428.1 specifies technical detail such as size, location and luminance contrast. |
