I live (and edit the map occasionally) around the downtown Salt Lake City area. I've noticed that many, if not most, junctions in the area -- as defined in Waze -- prohibit U-turns, but in reality, I'm not aware of many such restrictions on U-turns in actual intersections.

Of course, if an actual intersection has a "no U-turn" sign posted, that turn should be prohibited in Waze. But what of the many other cases, where U-turns are marked as disallowed in Waze, but appear to be legal in actual driving scenarios?

I have looked at all the Waze editing guidance I can see, as well as local & state driving laws, and can find no explanation. Is this just a local map editing convention or norm I should be aware of? Or am I missing something else?