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36 CFR Parts 1190 and 1191 ADA and ABA Accessibility Guidelines - Preamble (Discussion of Comments and Changes)

307 Protruding Objects

Objects mounted on walls and posts can be hazardous to persons with vision impairments unless treated according to the specifications in section 307 for protruding objects. Objects mounted on walls above the standard sweep of canes (i.e., higher than 27 inches from the floor) and below the standard head room clearance (80 inches), are limited to a 4 inch depth. Objects mounted on posts within this range are limited to a 12 inch overhang.

Comment. Several commenters called for the 27 inch triggering height to be reduced. Recommendations ranged from 15 to 6 inches. Comments also recommended that post-mounted objects be held to the requirements for wall-mounted objects.

Response. Post-mounted objects are common along sidewalks, street crossings, and other public rights-of-way. The Board intends to develop guidelines specific to public rights-of-way in a separate rule making. This other rulemaking will address and invite comment on protruding objects in public rights-of-way. With respect to the mounting height above which requirements for protruding objects apply (27 inches), the Board believes research is needed to further assess this specification. No substantive changes have been made to the provisions for protruding objects in the final rule.

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