[Tagging] Tagging U-Turns (Was: [OSM-talk] Divided/Non-Divided Intersection)

[Paul Johnson]

On Sun, 25 Jul 2010 17:18:23 -0700, Alan Mintz wrote:

> Tag where it's signed, which is generally the exception to the default.
> In places where the law is no-U-turn by default, I would expect to see
> "U-turn OK" signs where they are allowed. In places where the law is
> that U-turns are allowed by default, I see "no U-turn" signs where they
> are disallowed.

I'm curious, other than California (which tends to be quite backwards 
with it's vehicular code relative to the rest of the country, not that 
anyone follows or enforces it there), where is it legal to make a U-turn 
at a controlled intersection in the US?