Tactile Ground Surface Indicators.
Australia & Melbourne.

Tactile ground surface indicators — TGSIs — are the raised studs and bars set into the floor that vision-impaired pedestrians read through their feet and a cane. They come in two types: warning indicators (a grid of raised domes) that signal a hazard such as a stair, ramp or platform edge, and directional indicators (raised bars) that guide a safe path of travel.

To be compliant, a TGSI must meet the dimensional and layout rules of AS 1428.4.1, provide the required luminance contrast against the surrounding surface, and carry an AS 4586 slip-resistance classification. On government and transport work the product must also appear on the relevant state's approved TGSI register.

Korb's tactile range spans three families — the polymer Nouvel series, the Renzo integrated tiles and studs, and the Kahn modular, porcelain and solid-carved formats — covering both warning and directional indicators in integrated, discrete and carved installation types.

Every product is available supply-only or as a full supply-and-install package, with set-out and placement detailed to AS 1428.4.1 so it passes inspection the first time.