The Access Board or Architectural and Transportation Compliance Board provides technical assistance on the ADA Accessibility guidelines, including architectural, communication and transportation guidelines.
United States Access Board
1331 F Street, NW, Suite 1000
Washington, DC 20004-1111
(202) 272-0080 (v)(800) 872-2253 (v)
(202) 272-0082 (TTY)(800) 993-2822 (TTY)
(202) 272-0081 (fax)