Detectable Warnings Memorandum and Synthesis

Source: United States Department of Transportaion, Federal Highway Administration

Detectable warnings are an Americans with Disabilities Act (ADA) requirement in the current Americans with Disabilities Act Accessibility Guidelines (ADAAG) for the use of detecting the boundary between the sidewalk and the street. This memorandum provides information on the only detectable warnings allowed by ADAAG, i.e. truncated domes.

The PDF document provides a detailed synthesis of U.S. and international practice concerning detectable warnings.

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