“Roundabouts would provide a Darwinian solution to the alcoholic driver problems in your Commonwealth.”
I go to a restaurant frequently that is on a circle and evidently to many people think it is fine driving through the center (which is a park) plowing through those cement pillars and cement retaining walls. Some were drunk others were going to fast around the circle and lost control of the car.
Another advantage of the roundabout. It serves as a drunk-catcher.