基于车速的自适应交通信号灯控制系统

A Self-adaptive Traffic Light Control System Based on Speed of Vehicles

随着经济发展与人们生活水平的提高,城市机动车数量快速增长,城市交通引发的拥堵、环境污染等问题日益严重。智能交通系统(Intelligent Transportation System,ITS)已经成为国内外研究人员讨论和研究的最热门课题之一,其中如何解决交通拥堵问题尤为重要。为了改善路口交通状况,提高通行效率,提出了一种基于车速的自适应交通信号灯控制系统。系统采用车联网V2I(Vehicle to Infrastructure)通讯模式,利用V2I通讯协议,实现汽车与交通信号灯之间数据的传输。汽车在通过路口时将车速信息发送给该路口的交通信号灯,系统通过分析十字路口和十字路口前方车速信息和交通信号灯当前状态,实时地控制红绿灯的显示,实现红绿灯控制依据实时车流量进行实时自动调整。该系统能够减少十字路口的拥堵,从而有效缓解交通拥堵,提高道路通行能力。

With the development of economy and the improvement of people＇ s living standard, the number of vehicles in city is growing rapidly, and the congestion and environment pollution and other problems caused by traffic are becoming more serious. ITS （ Intelligent Transportation System） has become one of the hottest topics discussed by domestic and foreign researchers, and how to solve the traffic congestion problem is especially important in ITS. In order to improve traffic condition in intersections and to enhance traffic efficiency, a self-adaptive traffic light control system based on vehicle speed is proposed. It is an instance of V2I （Vehicle to Infrastructure） com- munication model, which realizes data transmission between vehicles and traffic light by using V2I protocols. Vehicles send speed messa- ges to the traffic light when passing the intersection, and the system controls by itself the traffic light by analyzing the speed of cars in both cross and the front and current state of the traffic light. This system can improve the traffic capacity and ease traffic congestion effec- tively through decreasing the congestion in intersection.