The Development and Enlightenment of Signalized Roundabout

Signalized roundabout is an ideal traffic control mode for high traffic volume roundabout, it has be widely used at home and abroad and gained successful operational performance. For the absent of modern roundabout, the control mode of signalized roundabout in our country is not the same with the other countries. This paper commences with the origin and development of signalized roundabout, compares the advantages and disadvantages between the different control modes and analyses their suitable scope, and try to find out the reasons why the control modes at home and abroad are different. At last, the paper summarizes the experiences and lessons of the other countries and puts forward corresponding countermeasures.