2022 California Standards for Accessible Design Guide (effective January 1, 2023)
DETECTABLE WARNING.
[DSA-AC] A standardized surface feature built in or applied to walking surfaces or other elements to warn persons with visual impairments of hazards on a circulation path.
Advisory Definition of DETECTABLE WARNING. Curbs can be used by pedestrians with vision impairments to detect the boundary between a sidewalk and a vehicular way. Curb ramps remove the needed cues for persons with visual impairments; detectable warnings have been developed as a replacement cue and warning to indicate the presence of a vehicular way. ◼
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