平行式快速路出口交通组织方法研究  

Traffic Organization Methods for Parallel Expressway Exits

作　　者：陈永恒[1] 李世豪 杨绥程 刘博 湛天舒 CHEN Yongheng;LI Shihao;YANG Suicheng;LIU Bo;ZHAN Tianshu(College of Traffic and Transportation,Jilin University,Changchun 130022,China)

机构地区：[1]吉林大学,交通学院,长春130022

出　　处：《交通运输系统工程与信息》2024年第3期232-239,共8页Journal of Transportation Systems Engineering and Information Technology

基　　金：国家自然科学基金重点项目(52131202)。

摘　　要：针对平行式快速路出口排队溢出的交通问题,本文提出平行式快速路出口在无信号控制和信号控制情况下的5种交通组织方法,根据主辅车流的车头时距分布,建立主辅车流产生延误的计算模型。从方案选择的角度,以车均延误为评价指标,研究平行式快速路不同交通流量状态下出口最适合采用的交通组织方法。结果表明:当平行式快速路主路驶出车流和辅路车流的总流量低于1500 pcu·h^(-1)时,采取无信号让行的控制方法。主路驶出交通量较高时,采用主路驶出优先控制;辅路交通量较高时,采用辅路优先控制。当总流量在[1500,2300]pcu·h^(-1)时,采用辅路信号与让行相结合的控制方法。当主路驶出交通量较大时,采用辅路信号主路优先控制;当辅路交通量较大时,采用辅路信号辅路优先控制。当总流量高于2300 pcu·h^(-1)时,采用主辅全信号的控制方法。Aiming to address the traffic congestion issue of queuing overflow at the exit of parallel expressways,this paper proposes five traffic organization methods for such exits under conditions of no signal control and signal control.By considering the headway distribution of both the main and auxiliary traffic flows,a calculation model for the delay of these flows is derived.From a perspective of scheme selection,with the average delay of vehicles as the evaluation index,the most suitable traffic organization method is examined at the exit of parallel expressways under different traffic flow conditions.The results indicate that when the combined flow of the main road outflow and the auxiliary road traffic of the parallel expressway is below 1500 pcu·h^(-1),the no-signal control method is recommended.When the traffic volume of the main road outflow is high,giving priority to the main road outflow is recommended;similarly,when the traffic volume of the auxiliary road is high,giving priority to the auxiliary road is recommended.For total flows are[1500,2300]pcu·h^(-1),a combination of auxiliary road signaling and yield control is recommended.Specifically,when the traffic volume of the main road outflow is substantial,implementing auxiliary road signaling with main road priority is recommended.Conversely,when the traffic volume of the auxiliary road is significant,adopting auxiliary road signaling with auxiliary road priority is preferable.For total flows exceeding 2300 pcu·h^(-1),full signaling for both the main and auxiliary roads is advocated.

关 键 词：交通工程 交通方案选择 交通流理论 城市快速路 驶出交通 车均延误模型 

分 类 号：U491[交通运输工程—交通运输规划与管理]