{"id":558,"date":"2022-09-08T14:21:43","date_gmt":"2022-09-08T14:21:43","guid":{"rendered":"https:\/\/clearingourpath.ca\/?page_id=558"},"modified":"2022-10-13T15:40:41","modified_gmt":"2022-10-13T15:40:41","slug":"guidance-tactile-walking-surface-indicators","status":"publish","type":"page","link":"https:\/\/clearingourpath.ca\/index.php\/design-needs\/exteriors-and-interiors\/tactile-walking-surface-indicators\/guidance-tactile-walking-surface-indicators\/","title":{"rendered":"Guidance Tactile Walking Surface Indicators"},"content":{"rendered":"
\"An
An asphalt pathway with light-coloured pre-cast concrete guidance TWSIs inset into the surface.<\/figcaption><\/figure>
\n
\"An
An asphalt pathway with light-coloured pre-cast concrete guidance TWSIs inset into the surface.<\/figcaption><\/figure><\/div>\n

Guidance TWSI<\/abbr>s should consist of a pattern of parallel, flat-topped, elongated bars that extend in the direction of travel.<\/p>\n

Guidance TWSI<\/abbr>s are appropriate at the following locations:<\/p>\n

    \n
  • Transit stops<\/li>\n
  • Train stations<\/li>\n
  • Subway or light rail transit (LRT) platforms<\/li>\n
  • Airports<\/li>\n
  • Sports arenas and stadiums<\/li>\n
  • Large open spaces (e.g., public squares)<\/li>\n
  • In the door areas of expansive open areas (e.g., shopping malls)<\/li>\n<\/ul>\n

    Follow these specifications for guidance TWSI<\/abbr>s:<\/p>\n

      \n
    • Where installed to define a route, their width should be 250 \u2013 300 mm.<\/li>\n
    • Where installed across a route as an indicator of an amenity or diverging route, their width should be 600 \u2013 650 mm.<\/li>\n
    • They should have a minimum continuous clearance of 600 mm on both sides.<\/li>\n
    • The height of the bars should be four to five millimetres.<\/li>\n
    • The top of the flat-topped elongated bars should have a width between 17 and 30 mm.<\/li>\n
    • The bars should be colour contrasted to surrounding surfaces to make them easily identifiable by people with low vision.<\/li>\n
    • The width of the base of the bars should be 10 mm (+\/- 1 mm) wider than the top.<\/li>\n
    • The top length of the bars should be at least 270 mm. If drainage is a concern, a space of 10 \u2013 30 mm should be provided at the ends of the bars.<\/li>\n
    • The spacing between adjacent flat-topped bars should be adjusted depending on the size of the bars, as shown in the table below. The larger the individual bars, the more distant the space between them.<\/li>\n
    • Attention TWSI<\/abbr>s should be used along tactile guidance paths to identify turns and other decision-making points. The attention TWSI<\/abbr>s should be configured in a square pattern centred on the guidance TWSI<\/abbr>
      \ns, with each side of the square being 600 mm – 650 mm.<\/li>\n<\/ul>\n\n\n\n\n\n\n\n
      A table showing the spacing between the flat-topped bars, based on the top width of the bars.<\/caption>\n
      Top width of flat-topped bars (mm)<\/th>\nSpacing between the centre of adjacent bars (mm)<\/th>\n<\/tr>\n
      17<\/td>\n57 to 78<\/td>\n<\/tr>\n
      20<\/td>\n60 to 80<\/td>\n<\/tr>\n
      25<\/td>\n65 to 83<\/td>\n<\/tr>\n
      30<\/td>\n70 to 85<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
      \n
      \"A
      A drawing of a TWSI installation incorporating both guidance and attention TWSIs. Guidance TWSIs provide information to locate a reception desk, stair and elevator. Attention TWSIs are used at changes in direction along the guidance path, as well as at the top of the stairs.<\/figcaption><\/figure>\n<\/figcaption><\/figure>\n

      An alternate type of guidance TWSI<\/abbr> should be used on road surfaces to assist persons with blindness to navigate complex road crossings including, but not limited to crossing at:<\/p>\n

        \n
      • Roundabouts, also known as traffic circles<\/li>\n
      • Mid-block crossings with four or more lanes<\/li>\n
      • Skewed intersections<\/li>\n
      • Offset crossings<\/li>\n<\/ul>\n

        It is important that the guidance TWSI<\/abbr>s used on road surfaces are clearly different and distinguishable from the guidance surfaces used in pedestrian areas. Guidance TWSI<\/abbr>s on road surfaces at pedestrian crossings should:<\/p>\n

          \n
        • Be configured as a straight path<\/li>\n
        • Be 250mm – 300mm wide<\/li>\n
        • Be detectable underfoot<\/li>\n
        • Be detectable with a long cane<\/li>\n
        • Be at least 50% colour\/brightness contrasted with adjacent road surfaces<\/li>\n
        • Not present a tripping hazard<\/li>\n
        • Not present a barrier for persons who use wheelchairs or other types of mobility devices<\/li>\n
        • Be configured to mitigate damage from snow-plowing<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"

          Guidance TWSIs should consist of a pattern of parallel, flat-topped, elongated bars that extend in the direction of travel. Guidance TWSIs are appropriate at the following locations: Transit stops Train stations Subway or light rail transit (LRT) platforms Airports Sports arenas and stadiums Large open […]<\/p>\n","protected":false},"author":3,"featured_media":0,"parent":545,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"class_list":["post-558","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/clearingourpath.ca\/index.php\/wp-json\/wp\/v2\/pages\/558","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/clearingourpath.ca\/index.php\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/clearingourpath.ca\/index.php\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/clearingourpath.ca\/index.php\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/clearingourpath.ca\/index.php\/wp-json\/wp\/v2\/comments?post=558"}],"version-history":[{"count":13,"href":"https:\/\/clearingourpath.ca\/index.php\/wp-json\/wp\/v2\/pages\/558\/revisions"}],"predecessor-version":[{"id":734,"href":"https:\/\/clearingourpath.ca\/index.php\/wp-json\/wp\/v2\/pages\/558\/revisions\/734"}],"up":[{"embeddable":true,"href":"https:\/\/clearingourpath.ca\/index.php\/wp-json\/wp\/v2\/pages\/545"}],"wp:attachment":[{"href":"https:\/\/clearingourpath.ca\/index.php\/wp-json\/wp\/v2\/media?parent=558"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}