The federal anti-discrimination statute enacted by the U.S. Congress was designed to ensure equal access to people with disabilities. ADA Accessibility Guidelines are very specific about how and where special needs signs must be displayed. The point is that people with special needs should not be excluded from enjoying the same experiences as other non-disabled people. Braille Signage and/or Tactile Signage are examples of signs that guide or provide assistance to those with special needs. A huge part of the ADA Accessibility Guidelines (ADAAG) involves informational signage to help a disabled person get around. Although the most visible ADA signs of this type involve raised characters and Braille, any architectural sign that provides information about the accessibility features of a facility must comply.
For more information visit http://www.ada.gov