By Scott Rains, Senior Advisor, [with]tv
and editor of the Rolling Rains Report
The Principles of Universal Design are:
1. Equitable Use
2. Flexibility in Use
3. Simple, Intuitive Use
4. Perceptible Information
5. Tolerance for Error
6. Low Physical Effort
7. Size and Space for Approach & Use
For a more detailed explanation of these seven principles, view them here on the Rolling Rains Report.