Ecological Systems and Devices Annotation << Back traffic management efficiency estimate at the junctions by microsimulation A.Y. Efremov Y.S. Legovich A modern growth rate in the total number of cars leads to traffic increasing, traffic congestion and, as a consequence, to impairment of the environmental situation. One way to struggle against congestions is to improve traffic flow. Effective method for finding optimal solutions in this area can be a simulation. This article considers the dynamic model of traffic flows at roundabout. The use of such a model allows you to explore the dynamics of traffic flows, including congested traffic, and also to evaluate the various uses of signs and road markings. Application of the model on the real roundabout showed that higher capacity is achieved for priority ring movement for the same junction planning. Key words: transport ecology; traffic flow; simulation; roundabout; level of service. Contacts: E-mail: e_andre@mail.ru E-mail: legov@ipu.ru Pp. 34-42.