I am American! Metro Detroit area. I guess we also don't have many roundabouts. A lot of our road designs are based on Michigan Lefts[0] though which Wikipedia

I am American! Metro Detroit area. I guess we also don't have many roundabouts. A lot of our road designs are based on Michigan Lefts[0] though which Wikipedia says are also called "median U‑turn crossover or median U‑turn, or restricted crossing U-turn (RCUT)" which I don't see much elsewhere in the country. [0] https://en.wikipedia.org/wiki/Michigan_left https://en.wikipedia.org/wiki/Michigan_left