[Bonanza]

All of the comments are good and well meaning, even the ones that contradict each other. And speaking of contradictions, the biggest one, perhaps is the large green sign at each circle and the lines that are painted on the street.

The dotted lines painted on the road belie what the green sign is telling you. Anywhere in the u. S., a dotted line means that you can pass -- that it's legal to do so. That clearly is NOT what the sign indicates!