People who live with vision impairment understand the true importance of detectable warning systems as an aid that allows them to safely navigate pedestrian street crossings, including curb ramps and blended transitions, certain median and refuge islands, and rail lines. The requirement for universal compliance is actually relatively recent. In July 2001, after a 10-year suspension for research, the U.S. Department of Justice made installation of detectable warning systems mandatory at such crossings.

For more information regarding compliance with the ADA as well as the Fair Housing Amendments Act (FHAA and how it influences their facilities, services and programs, contact the following renowned accessibilities experts:

Bill Scott
Abilities Unlimited, Inc.
www.abilitiesunlimited.com

Herb Hacker, AIA, ICC Certified
Access Technologies Services
602-870-1153
herbhacker@msn.com
www.accessts.net

Detectable Warning Surfaces
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U.S. Access Board Requirements

ADOT Guidelines
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U.S. Department of Transportation
Federal Highway Administration
Americans with Disabilities Act (ADA) Accessibility Guidelines and Detectable Warnings
ADAAG Detectable Warnings (Truncated Domes)

Maricopa Association of Governments Standards 2008
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Accessible Public Rights-of-Way
Planning and Design for Alterations
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Revised Draft Guidlines for
Accessible Public Rights-of-Way
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