TRAFFIC - 'Super circles' to lessen rush-hour traffic congestion

While Mother Nature continues to challenge drivers across the country, a team of traffic engineers is working hard on a new way to make rush-hour commutes safer and faster in any weather. A "super circle" involves adding a stop light to one approach of a roundabout to control the number of vehicles entering during rush hours ...

http://www.sciencedaily.com/releases/2014/03/140313122536.ht