Nathan suggests that US 30 have a bunch of them- and based on what I’ve seen, I have trouble disagreeing.
OTOH, we have to remember just HOW STUPID PEOPLE ARE.
This week I have spent a good deal of time at a customer who can be reached most easily by driving through the one roundablut in the area, in Valparaiso, Indiana.
And each morning ther is at least one and often as many as five people who cannot operate this simple traffic device.
Look, people. Turn right, follow the flow, keep moving, exit where you need. It is not necesary to WAIT UNTIL THERE ARE NO CARS ANYWHERE, MOVING NOT EVEN IN YOUR PERIPHERAL VISION before you pull into the circle. Really. Go somewhere that doesn’t require that you attempt to comprehend this simple device. Like hell, perhaps.