Never seen one of these. On first observation, I don't get what it is improving. You still have two lighted intersections, only now they are crossing each other and involve corners. You also have a bad crossing traffic - traffic exiting the highway not only has to merge with traffic, but the traffic entering the highway has to cross that merging traffic. And pedestrians have 4 major intersection crosses now.

I guess I am still not getting what it supposedly improves.