A11ying with Sanna - Web Content Accessibility Guidelines a guide to the accessibility requirements
3 Understandable

3.2.3 Consistent Navigation

Conformance level: AA
Criterion released in WCAG version: 2.0

Official description of the success criterion

Navigational mechanisms that are repeated on multiple Web pages within a set of Web pages occur in the same relative order each time they are repeated, unless a change is initiated by the user.

What to do?

Use consistent navigation mechanisms across pages.

Why is it important?

Assists users in learning and navigating the site.

Common pitfalls

WCAG Failure F66: Presenting navigation links in a different relative order on different pages.

More about this criterion elsewhere