Draft of levels

The UAAG 2.0 levels are designed to complement the levels of WCAG 2.0, 
A, AA, and AAA, where Level A provides remedies to the most severe 
accessibility problems for people with disabilities, and therefore is 
the highest priority for user agent developers.

These levels are designed to allow companies to get the most out of 
developer hours by addressing the low hanging fruit first: Level A 
addresses serious user problems that draw a reasonable amount of
  developer time. Level AA addresses user problems that improve the 
experience of people with disabilities and may take more developer time 
to implement. Level AAA is reserved for user problems that may be more 
specialized or are challenging to implement.

If a user finds 10 different actions he performs frequently cognitively
difficult, physically difficult or very time-consuming, he may be
overwhelmed. However, if eight of those actions require a reasonable
amount of developer time for corporations to enable in a better way,
fixing those eight may allow the user to handle the extra difficulty on
the other two. This is not ideal, but it is practical.

At the same time, if a company has a policy to dedicate a percentage of 
developer time to accessibility and this is not enough time to address 
everything, it is practical to complete as much as possible before the 
and work on some longer-term items iteratively to further improve the 
accessibility of the browser over time.

Level A Success criteria address accessibility problems that block people
with disabilities from interacting with the interface or content and are
technically feasible for the vendor to implement

Level AA success criteria provide accessibility solutions to people with
diverse disabilities and are feasible to implement.

Level AAA success criteria address accessibility for specific groups of
people with disabilities and are challenging to implement.

Received on Thursday, 6 December 2012 18:59:51 UTC