detectable warning

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detectable warning

According to the Americans with Disabilities Act, a change in a walking surface that alerts a disabled person to the possibility of a hazard ahead.
References in periodicals archive ?
The detectable warning with a bar tile cue was a modification to the truncated dome detectable warnings that are required at curb ramps in the United States (U.S.
The guidelines require the installation of detectable warnings on sidewalks, street crossings and curb ramps, hazardous vehicular ways, and transit platform edges.
ADA also has raised controversy among blind people about modifying the built environment, particularly regarding raised, truncated dome detectable warnings, ostensibly to alert blind persons approaching or walking along platform edges.
These specifications include the required used of detectable warnings such as truncated domes, at curb ramps and hazardous vehicular areas.
Research is under way at this time to determine whether certain types of detectable warnings are effective and if there is actually any use for them in the environment.
However, concerns associated with the safety and negotiability of such detectable warnings for other travelers have resulted in much controversy.