The U.S. Access Board has published a technical bulletin on accessible signage that covers the requirements for signs in Chapter 7: Communication Elements and Features of the Americans with Disabilities Act (ADA) and Architectural Barriers Act (ABA) Accessibility Standards. The bulletin includes both the ADA Technical Guide to Signs and the ABA Technical Guide to Signs, both of which address signs for designations of rooms and spaces, international symbols of accessibility, raised characters, finish and contrast, Grade 2 braille, visual character spacing and height, locations of signs at facilities, and other spaces and elements. This publication on accessible signage coincides with the 54th anniversary of the ABA. Passed in 1968, the ABA stands as the first measure by Congress to ensure access to the built environment for people with disabilities.  The law requires that buildings or facilities that were designed, built, or altered with federal dollars or leased by federal agencies after August 12, 1968 be accessible.