Principle Three: Simple and Intuitive Use

Use of the design is easy to understand, regardless of the user’s experience, knowledge, language skills, or current concentration level.

Guidelines:
Eliminate unnecessary complexity.
Be consistent with user expectations and intuition.
Accommodate a wide range of literacy and language skills.
Arrange information consistent with its importance.
Provide effective prompting and feedback during and after task completion
(Story et al., 1998, p.43).


An example of stairs having different step heights (Kocatepe, Ankara)




An example of stairs having no rhytmic organization (Meşrutiyet Caddesi, Ankara)

In spite of including complexity, universal design should be a provider of simplicity to make the usages easy for everyone. People having different abilities, having different experiences should be able to use the design area easily. In addition to that the current concentration level of the people should not affect the usage. As an example stairs must be designed rhythmically and the height of the steps should be equal.