高速公路施工路段合流区车辆智能汇合控制策略研究

Research on Vehicle Intelligent Merging Control Strategy on Merging Area of Expressway Construction Section

摘要: 高速公路作业区车道变窄路段上游车辆不得不在车道变窄处上游适当的位置进行合流，车辆合流会造成侵略性驾驶行为的发生，存在严重的交通安全隐患，且不同的上游流量和交通组成情况下，车辆合流位置的时空分布特性直接决定了高速公路运行效率和交通安全的高低。本文基于车辆汇入间隙理论和高速公路通行能力模型制定了一套高速公路合流区车辆智能汇合控制策略，给出了考虑大车率和上游交通流率，以及道路几何特性等因素的合流控制阈值，对于提升施工合流路段交通安全和通行效率，减少侵略性驾驶行为的发生意义重大。

Abstract: Vehicles in the freeway work zones where lanes become narrow have to merge at the appropriate position upstream of the narrowed lane. Vehicles’ merging can cause aggressive driving behavior and result in serious traffic safety hazard. Under different upstream traffic volume and traffic composition, the spatial and temporal distribution characteristics of vehicles’ merging location directly determine freeway operational efficiency and traffic safety. Based on the vehicular gap acceptance theory and freeway capacity model, an intelligent vehicle merging control strategy for freeway merging area is proposed, and the merging control thresholds considering the factors such as the rate of heavy vehicles, upstream traffic flow rate, and highway geometry are given. The whole control strategy is significant in enhancing traffic safety and traffic efficiency, and reducing the occurrence of aggressive driving behavior in merging area of highway construction section.