HTML5 and ARIA landmarks
During a transition phase include roles on semantic html tags.
Running through some accessibility testing with site improve I ran across an interesting tip.
Instead of using
On the deque university site:
The markup for regions and roles is redundant, but this is a transition period, and the above markup is the most robust. The most useful of these for most websites are header/banner, nav/navigation, main, and footer/contentinfo. Source: HTML 5 and ARIA Landmarks
So for the time being use role types even if its redunant.
If there is no visible label or description on a select menu best practice is to use an aria-label ex.
Testing Select box labels with Screen Readers to assess WCAG conformance by David MacDonald