In the US, Carmel, Indiana has the most roundabouts. They just installed over 100 with many more on the way.<p>Ironic as the first automated traffic light was also installed in Carmel.<p><a href="http:&#x2F;&#x2F;www.carmel.in.gov&#x2F;index.aspx?page=123" rel="nofollow">http:&#x2F;&#x2F;www.carmel.in.gov&#x2F;index.aspx?page=123</a>