This document was prepared by the US Department of Justice which oversees compliance with the Americans with Disabilities Act (ADA). It gives a broad overview of considerations when creating materials to make sure they can be accessed by everyone.
People who have vision, hearing, or speech disabilities (“communication disabilities”) use different ways to communicate. For example, people who are blind may give and receive information audibly rather than in writing and people who are deaf may give and receive information through writing or sign language rather than through speech.
The ADA requires that title II entities (State and local governments) and title III entities (businesses and nonprofit organizations that serve the public) communicate effectively with people who have communication disabilities. The goal is to ensure that communication with people with these disabilities is equally effective as communication with people without disabilities.