If I were king, I’d take almost every major intersection in this state and replace it with a roundabout (traffic circle).
The reason they have not taken off here, is that people aren’t educated on how to use them. In fact, most folks freak out when they approach one (what’s worse is when they get outfitted with stop signs). But if we put in a lot of them (a LOT), we’d all learn fast. Besides, its just: "look left upon approach and yield to the folks in the circle. Once we passed a tipping point, people would find them as wonderful as i did when I lived in the Cote d’Azur and Britain. (No jokes, please.)