摘要
在加强依法让行的实践过程中,出现了“让行加剧拥堵”的现象和误解。为解析该现象并给出优化方法,首先分析了法律规范中关于让行的规定,并从微观角度梳理了信号控制交叉口的各类让行需求。其次,基于让行事件链提出交叉口组织模式、空间渠化、信号控制3个层面的优化方法。最后,通过仿真和实测两种手段对优化方法的效果进行评估。研究表明,信号控制交叉口让行问题改善的关键在于满足让行的时空需求,以及减轻转向机动车驾驶人的观察、决策和行动压力。评价结果表明,优化方法可以有效缓解让行带来的效率降低、视距不良、机非干扰大等问题,并且可以带来一些边际效益,如交通文明提升、交通管理成本降低等。
In the process of strengthening the practice of giving way in accordance with the law,the phenomenon and misunderstanding of“giving way to traffic increase congestion”have appeared.To analyze this phenomenon and give an optimization method,this paper first analyzes the provisions on giving way in the legal norms and sorts out the various types of giving way demands at signalized intersections from a micro point of view.Secondly,based on the event chain,the optimization method of intersection organization mode,spatial channelization,and signal control are proposed.Finally,the effectiveness of the optimization method is evaluated by both simulation and real-world measurement.The results show that the key to improving the give-way problem at signalized intersections lies in satisfying the spatial-temporal demands of give-way,as well as alleviating observation,decision-making,and action pressure of the turning motorists.The evaluation results show that the optimization method can efficiently alleviate the problems of reduced efficiency,poor sight distance,and high conflict between motorized and motorized and non-motorized traffic caused by giving way,and is able to bring marginal benefits,such as traffic civilization enhancement and traffic management cost reduction.
作者
孙伟
杨晓光
SUN Wei;YANG Xiaoguang(Key Laboratory of Road and Traffic Engineering of the Ministry of Education,Tongji University,Shanghai 200092,China)
出处
《城市交通》
2024年第3期101-109,共9页
Urban Transport of China
基金
国家自然科学基金面上项目“供给约束条件下老城区道路交通优化设计理论”(52072264)。
关键词
交通工程
交通设计
信号控制交叉口
让行优化
事件链
转向交通
traffic engineering
traffic design
signalized intersections
yielding behaviors improvement
event chain
turning traffic
