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Re: Transitions causing motion sickness - WCAG failure and how to handle?

for

From: Shadi Abou-Zahra
Date: Dec 21, 2016 6:27AM

If the animation lasts more than five seconds then 2.2.2 could apply:
- https://www.w3.org/WAI/WCAG20/quickref/#qr-time-limits-pause

Best,
Shadi


On 21-Dec-16 12:22, Karl Brown wrote:
> Hi all,
>
> A client is going through a rebranding exercise and as part of that wants
> to use lots of animated transitions. The biggest once I've seen is a
> right-to-left "swipe" which starts slow, speeds up (a lot) and slows right
> down. The transitions will be used in videos and to switch between "states"
> (showing/hiding content which itself slides in at a different rate to the
> "block" it sits on).
>
> While reviewing the document and checking the design agency are proposing I
> started to feel symptoms of motion sickness. I'm not personally prone to
> motion sickness so I'm assuming the animated transitions are likely to
> cause issues for a much wider group of people.
>
> Looking through the WCAG I can't see anything that talks about transitions,
> motion sickness, or anything similar. The closest I can find is 2.3.1 but
> that's about seizures and is closer to epilepsy than motion sickness.
>
> Does anyone know of an interpretation that can cover transitions?
>
> If not, how does the group suggest handling the situation? My concern for
> the client is they lose customers because people don't want to visit a
> website that makes them feel sick. I don't know enough about sensory
> disorders to know whether to speed up/slow down/eliminate the transitions
> (the latter won't go down well with the brand team at the client).
>
> All the best,
>

--
Shadi Abou-Zahra - http://www.w3.org/People/shadi/
W3C Web Accessibility Initiative (WAI)