Evaluation of Speed Control Effect of Cooperative Vehicle Infrastructure System with a SUMO-NS3 Co-Simulation Platform

Speed limit is an important link in traffic safety. For example, schools, hospitals, villages and other special sections, it is necessary to remind/control the reasonable speed in the subsequent sections ahead and prevent the danger of overspeed. In this paper, we implement the vehicle speed control system of Cooperative Vehicle Infrastructure System and its simulation verification. In the process of simulation and verification, combined with the micro traffic simulation software SUMO and network simulation software NS3, taking the map of Weishui campus of Chang’an University (OSM) as the design background, roadside units are set at multiple intersections to design the Cooperative Vehicle Infrastructure System. When the vehicle passes the intersection with roadside units deployed, the roadside unit sends the restricted speed of the section to passing vehicles, So as to control the driving speed of the vehicle on this road section. In the networked vehicle simulation system designed in this paper, first generate the road network and simulated vehicles through SUMO, then deploy RSU in the road network and deploy OBU on the simulated vehicles by NS-3, finally realize the communication between RSU and OBU by means of network simulation, and conduct animation demonstration through SUMO, finally realize the speed control of vehicles within the specified range, and analyze the effect of this control, The feasibility of the scheme is proved, and the impact of the networked vehicle speed control system on the road network is discussed by analyzing the change of vehicle emission in the networked vehicle speed control system.