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Assistive products for blind and vision-impaired persons — Tactile walking surface indicators
This document specifies two types of TWSIs: attention patterns and guiding patterns. Both types can be used indoors and outdoors throughout the built environment where there are insufficient cues for wayfinding, or at specific hazards.
NOTE Some countries have adopted other designs of TWSIs based on the consolidated findings of science, technology and experience, ensuring that they can be detected and distinguished by most users.
This document is not intended to replace requirements and recommendations contained in such national StandardDetails, regulations or guidelines.
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