TGSIs

Applicable Standards

AS/NZS 1428.4:2009
Design for access and mobility – Part 4.1: Means to assist the orientation of people with vision impairment – Tactile ground surface indicators

TGSIs provide cues, which, when combined with other environmental information, assist people who are blind or vision-impaired with their orientation. Orientation is a person’s awareness of where they are, where they are going, and where they have been. Information on wayfinding is given in Appendix A. A person’s orientation, through processing all available environmental cues, will make the information provided by the TGSI meaningful. Warning TGSIs indicate an approaching hazard but not what the nature of the hazard will be. The application of TGSIs will not correct bad design or make an unsafe environment safe. Good design will minimise the need for the use of TGSIs. TGSIs should be installed to provide guidance and/or warning of an obstruction or hazard in any location where insufficient alternative or ‘natural’ tactile cues exist.

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