Interesting assessment. I was guessing that if people treated yields like green lights, yield sign locations would be common scenes of accidents. I don’t see that around here, but maybe my observations are not as comprehensive or insightful as yours.

We have a couple of intersection yields here, but not as 4-way controls: the signs also say crossing traffic does not stop. We also have yields at all traffic roundabouts here, and there, too, they seem to work because people don’t go sailing into the circle with reckless abandon.