I'm curious how you get car totaling crashes in a traffic circle. Generally the traffic circles that have been installed around me are all relatively small and

I'm curious how you get car totaling crashes in a traffic circle. Generally the traffic circles that have been installed around me are all relatively small and greatly cut down on speed going through the intersection. I could absolutely see an increase in fender bender style accidents here, because for some reason how to operate a traffic circle is an impossible mystery to Iowa drivers. But how are cars being totaled? I remember when driving in SoCal, there was a massive traffic circle that I could see people maintaining fairly high speeds through and could see major accidents happening. But everything I see locally would be low speed collisions.