This story: http://www.wbir.com/news/article/147608/2/Diverging-diamond-interchange-fully-open-to-traffic-in-Alcoa http://www.wbir.com/news/article/147608/2/Di

This story: http://www.wbir.com/news/article/147608/2/Diverging-diamond-interchange-fully-open-to-traffic-in-Alcoa http://www.wbir.com/news/article/147608/2/Diverging-diamond-... Prompted me to do further research. As a motorcyclist, avoiding left turns across traffic is particularly interesting.