What do the II R and V R mean on the front doors of public access buildings?

When ever I walk into a public access building, I often see some lettering like:
II OR V
R R

and just really want to know what they stand for. I think either bathroom availability or defibrillator access. Please let me know what they mean, thanks!
Update: I am also curious about what the different meanings are of these symbols.
1 answer 1