{"id":545,"date":"2022-09-08T13:52:36","date_gmt":"2022-09-08T13:52:36","guid":{"rendered":"https:\/\/clearingourpath.ca\/?page_id=545"},"modified":"2023-09-07T11:19:20","modified_gmt":"2023-09-07T14:19:20","slug":"tactile-walking-surface-indicators","status":"publish","type":"page","link":"https:\/\/clearingourpath.ca\/index.php\/design-needs\/exteriors-and-interiors\/tactile-walking-surface-indicators\/","title":{"rendered":"Tactile Walking Surface Indicators"},"content":{"rendered":"

<\/code>TWSI<\/abbr>s, also known as detectable warning surfaces or tactile attention indicators, are standardized walking surfaces that convey information to people impacted by blindness through texture and, occasionally, sound.<\/p>\n

TWSIs were invented in Japan in 1965. They are now used around the world to help blind or vision-impaired persons travel independently. At present, TWSI patterns and installation methods vary from country to country.
\nWhile TWSIs should be effective for blind or vision-impaired persons, attention should also be paid to their surface structure and materials in order to
\nensure that all pedestrians, including those with impaired mobility, can safely and effectively negotiate them. The use and installation of TWSI are set out in the ISO 23599 standard<\/a>.<\/p>\n

\"An
An attention TWSI consisting of raised truncated domes arranged in a grid pattern.<\/figcaption><\/figure>\n

They are typically made from inserts (e.g., metal, rubber, stone or plastic) or can be built directly into ground surfaces made of concrete. TWSI<\/abbr>s should have a texture that can be felt underfoot and detected by a long cane. Their edges should be bevelled to decrease the likelihood of tripping.<\/p>\n

\"A
A guidance TWSI consisting of elongated bars arranged in a linear pattern.<\/figcaption><\/figure>\n

There are two types of TWSI<\/abbr>s:<\/p>\n