About Universal Design
Universal Design considers 7 principles and is embraced in the built environment internationally. These are:
Principle 1: Equitable use
Principle 2: Flexibility in use
Principle 3: Simple and intuitive use
Principle 4: Perceptible information
Principle 5: Tolerance for error
Principle 6: Low physical effort
Principle 7: Size and space for approach and use
Learn more about universal design in the built environment with some of the many international resources available:
The Centre for Excellence in Universal Design is based in Ireland and provides a wealth of information around universal design best practice.
The Center for Inclusive Design and Environmental Access (IDeA Center) is associated with the School of Architecture and Planning at University at Buffalo in the United States.
This is what Wikipedia says about universal design.