SECTION V. Web Publications Conventions
M. Use of motion
STANDARD:
UWRF departments/offices should avoid using motion on their Web pages whenever possible. Any motion used on a UWRF Web page must be integral to the content of the site, user-controlled, and limited to three cycles before stopping automatically.
Explanation:
UWRF departments/offices are strongly discouraged from using motion (i.e., animated graphics, blinking text, scrolling banners, and auto-dating objects and pages) on their Web sites for a number of reasons:
- People with photosensitive epilepsy can have seizures triggered by flickering or flashing in the 4 to 59 flashes per second (Hertz) range with a peak sensitivity at 20 flashes per second as well as by quick changes from dark to light (like strobe lights).
- Some people with cognitive or visual disabilities are unable to read moving text quickly enough or at all.
- Movement can also cause such a distraction that the rest of the page becomes unreadable for people with cognitive disabilities.
- Screen readers (used by the blind and visually impaired) are unable to read moving text.
- Some people with physical disabilities cannot move quickly or accurately enough to interact with moving objects.
