We went through the "Diverting Diamond" in Springfield, Missouri (illustrated in the article). I found it to be utterly terrifying and never want to try it again. I had no idea what to do, but somehow got through it anyway.
However, local residents say that after going through it a few times it is easy, and that it has eased the bottleneck in that intersection. It seems very popular there, and there is a hope that it will be a model for intersections in other communities.
"You can never cross the ocean until you have the courage to lose sight of the shore." - - - C. Columbus