How was ADAAG developed?
The responsibility to supplement existing Federal accessibility guidelines for application to titles II and III of the ADA was assigned to the Architectural and Transportation Barriers Compliance Board (the Access Board) in the statute itself. A Notice of Proposed Rulemaking (NPRM), published in the Federal Register on January 22, 1991, contained the proposed document, the ADA Accessibility Guidelines, modeled on the format and technical specifications of ANSI – the American National Standards Institute – A117.1-1980 and -1986, with scoping based on that required by the existing Uniform Federal Accessibility Standards (UFAS). Public input was sought during a 60-day comment period, which included a number of public hearings across the country. Several proposed provisions were modified as a result of information and data received in response to questions in the NPRM. Proposed Section 10 Transportation Facilities of the guidelines was reserved at initial publication and later proposed as
