ISO-23599 › Assistive products for blind and vision-impaired persons - Tactile walking surface indicators
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This document provides product specifications for tactile walking surface indicators (TWSIs) and recommendations for their installation in order to assist in the safe and independent mobility of blind or vision-impaired persons.
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 standards, regulations or guidelines.
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Jan. 1, 2019