Landmarks with the same role must have unique labels

Checks repeated landmarks (nav, aside, etc.) and ensures each has a unique accessible label.

• Screen reader landmark lists become ambiguous
• Users cannot distinguish “Navigation” regions from each other
• Jump navigation becomes slower and error-prone

Add distinct labels via aria-label or aria-labelledby for repeated landmark roles.

Bad Example:

<nav>...</nav>
<nav>...</nav>

Good Example:

<nav aria-label="Primary navigation">...</nav>
<nav aria-label="Footer navigation">...</nav>

• Copy/pasting same landmark label
• Leaving all repeated landmarks unlabeled
• Labeling visually but not programmatically

• Inspect landmarks list in a screen reader
• Verify repeated role entries have unique names
• Run automated rule checks for duplicate landmark labels