Detectable Warnings

If walk crosses or adjoins a vehicular way, and walking surface is not separated from vehicular areas with curbs, railings or other elements, the boundary between the areas to be defined by a continuous detectable warning which is 36” wide.
CBC 1133B.8.5 ADAAG 4.29.5

Continuous Detectable Warning

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8 Responses to Detectable Warnings

  1. Francisco Carrillo says:

    Regarding ADAAG 4.29.5 which states: If walk crosses or adjoins a vehicular way, and walking surface is not separated from vehicular areas with curbs, railings or other elements, the boundary between the areas to be defined by a continuous detectable warning which is 36” wide.

    Is crossing a driveway considered a walk cross? Thus, is the above stated is applicable to driveway crossing?
    Thanks
    Francisco

    • mm Dwight Ashdown says:

      It probably depends on the specific situation – but I can’t recall seeing a condition where detectable warnings were used on a sidewalk that parallels a public way, where a driveway perpendicularly crosses the sidewalk. Where the pedestrian walkway and the vehicular way are at the same level – it is necessary to separate the two areas with a detectable warning or curb to signal to visually impaired individuals that they are moving from a pedestrian area into an area with vehicular traffic.
      Detectable warnings - In-N-Out

  2. Bill Fletcher says:

    Does it have to be yellow.
    Auto dealership has a drop off drive isle that meets its display area in front of the building. Can these domes be black or do they have to be yellow??

  3. James Christian says:

    City of Columbus, Ohio uses the following criteria: If a driveway is signalized or has stop control (stop or yield signs), install detectable warnings.Otherwise, do not use. Reason: overuse negates the impact of the unit…the units should be reserved for use when there is a relatively significant danger to the pedestrian.

  4. Ron Lockman says:

    what year did truncated domes become part of the CBC?

    Thnx

  5. Ron Lockman says:

    What year did truncated domes first appear in the CBC?

    • mm Dwight Ashdown says:

      The oldest CBC code book we have is 2001 – and the requirement f/ detectable warnings is in that.

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