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Guidance on the 2010 ADA Standards for Accessible Design

The Department of Justice’s explanation of changes to the ADA design standards, with section-by-section analysis and responses to public comments.

AccessibilityAnthropometry & ergonomics
Open original PDF at page 114

Source wording and page order preserved. Drawings and table layouts remain available in the original PDF.

Analysis and Commenta ry o n the 2010 ADAStandards calculate the number of receivers required and independently usable by persons with based on the total number of seats in all the visual impairments, but do not contain any assembly areas, instead of each assembly technical specifications. area separately, where the receivers are compatible with the assistive listening 221 Assembly Areas systems used in each of the assembly areas. Wheelchair Spaces/Companion Seats. Mono Jacks, Sound Pressure, Etc. Owners of large assembly areas have Section 4.33.7 of the 1991 Standards does historically complained to the Department not contain specific technical requirements that the requirement for one percent (1%) for assistive listening systems. The 2010 of seating to be wheelchair seating is Standards at section 706 require assistive excessive and that wheelchair seats are listening systems to have standard mono not being sold. At the same time, advocates jacks and will require hearing-aid compatible have traditionally argued that persons who receivers to have neck loops to interface with use wheelchairs will increasingly participate telecoils in hearing aids. The 2010 Standards in activities at assembly areas once they also specify sound pressure level, signal-to- become accessible and that at least one noise ratio, and peak clipping level. Currently percent (1%) of seats should be accessible. available assistive listening systems typically meet these technical requirements. The 1991 Standards, at sections 4.1.3(19) (a) and 4.33.3, require assembly areas to 220 and 707 Automatic Teller Machines provide wheelchair and companion seats. and Fare Machines In assembly areas with a capacity of more than five hundred seats, accessible seating Section 707 of the 2010 Standards adds at a ratio of one percent (1%) (plus one specific technical requirements for speech seat) of the number of traditional fixed seats output, privacy, tactilely-discernible input must be provided. The 2010 Standards, at controls, display screens, and Braille section 221.2, require assembly areas with instructions to the general accessibility 501 to 5000 seats to provide at least six requirements set out in the 1991 Standards. wheelchair spaces and companion seats Machines shall be speech enabled plus one additional wheelchair space for and exceptions are provided that cover each additional 150 seats (or fraction thereof) when audible tones are permitted, when between 501 through 5000. In assembly advertisements or similar information are areas with more than 5000 seats at least 36 provided, and where speech synthesis wheelchair spaces and companion seats plus cannot be supported. The 1991 Standards one additional wheelchair space for each require these machines to be accessible to 110 - Guidance on the 2010 Standards: Titles II and III Department of Justice

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