内嵌式左转交通组织优化及评估系统开发

Development and Evaluation System for Optimized Embedded Left-Turn Traffic Organization

摘要: 为了对左转交通流交通组织进行优化与优选，文章设计了内嵌式左转交通组织优化方案，进而开发了左转优化评估系统。提出了一种基于内嵌式左转待行区的借同向直行车道左转交通组织优化方案，明确了待转区域长度、预信号与交叉口信号协同方案；进一步开发了左转优化评估系统，该系统根据输入的交叉口交通流量、几何结构、信号配时等参数，自动评估并推荐最优的左转优化方案并说明理由。研究结果表明，内嵌式左转交通组织优化方案可以在交叉口进口道左转专用车道数量受限、左转车流量较大且单周期放行受限的情况下，有效提升左转交通流通行效率；左转优化评估系统能够有效提供对左转交通流组织的方案推荐。研究成果可为左转交通流交通组织优化提供理论依据与技术支持。

Abstract: To optimize and select the best traffic organization for left-turn traffic flow, this paper designs an embedded left-turn traffic organization optimization scheme and develops a left-turn optimization evaluation system. A left-turn traffic organization optimization scheme based on an embedded left-turn waiting area that borrows the same-direction straight-through lane is proposed, and the length of the waiting area, the pre-signal, and the coordination scheme with the intersection signal are clarified. Further, a left-turn optimization evaluation system is developed. This system automatically evaluates and recommends the optimal left-turn optimization scheme based on the input parameters such as intersection traffic flow, geometric structure, and signal timing, and provides reasons for the recommendation. The research results show that the embedded left-turn traffic organization optimization scheme can effectively improve the efficiency of left-turn traffic flow when the number of left-turn lanes at the intersection entrance is limited, the left-turn traffic volume is large, and the single-cycle release is restricted. The left-turn optimization evaluation system can effectively provide scheme recommendations for the organization of left-turn traffic flow. The research results can provide theoretical basis and technical support for the optimization of left-turn traffic flow traffic organization.