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A11ySignal
Level AAAWCAG 2.0WCAG 2.1WCAG 2.2

2.2.4
Interruptions

What the standard says

Interruptions can be postponed or suppressed by the user, except interruptions involving an emergency.

Where this one sits

This is a Level AAA criterion. Level AAA is not required by the European Accessibility Act or EN 301 549, and W3C itself does not recommend it as a site-wide target — so we have kept our commentary to the A and AA set rather than padding out pages we cannot improve on.

How A11ySignal checks it

1 automated check runs against this criterion on every scan.

minormeta-refresh-no-exceptionsDelayed refresh must not be used

Also under 2.2 Enough Time