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

Comment. The proposed rule removed language in the original ADAAG that vehicles parked in accessible spaces not reduce the clear width of connecting accessible routes. The Board had considered this requirement redundant in view of specifications for accessible routes in section 402. Many commenters disagreed and urged that such a requirement be restored in the final rule. Some comments pointed out that the ANSI A1171.1 standard, like the original ADAAG, specifies that "parked vehicle overhangs shall not reduce the clear width of an accessible route."

Response. The Board has added a requirement that spaces and access aisles be designed so that parked vehicles "cannot obstruct the required clear width of adjacent accessible routes" (502.7). A typical design solution where accessible routes run in front of spaces is the provision of wheel stops that help prevent encroachment into the accessible route.