“This document contains the designers’ version of the Universal Design Performance Measures for Products. These Performance Measures are intended to guide the development of more universally usable products.
The Performance Measures are based on the Principles of Universal Design (The Center for Universal Design, 1997), beginning with the initial, overall concept of Equitable Use (Principle One) and proceeding to the physical detail of Size and Space for Approach and Use (Principle Seven). Depending on the nature of the product, some Principles may not apply, and it may sometimes be more effective to apply them out of order.” (The Center for Universal Design)
