近邻信号交叉口定向交通管制适宜间距研究  

Study of Suitable Spacing for Directional Traffic Control at Near-neighbor Signalized Intersections

作　　者：唐辰晨 盛玉刚[1] TANG Chen-chen;SHENG Yu-gang(College of Automobile and Traffic Engineering,Nanjing Forestry University,Nanjing 210037,China)

机构地区：[1]南京林业大学汽车与交通工程学院,江苏南京210037

出　　处：《物流工程与管理》2022年第9期71-74,70,共5页Logistics Engineering and Management

基　　金：住房和城乡建设部科学技术项目计划《苏南镇区交通安全管理技术研究》(2013-K5-29);《基于安全-效率的城市道路新型交叉口设计》(2021NFUSPITP0736)。

摘　　要：为提高城市近邻小间距信号交叉口高峰期的通行能力与交通安全性,以下游交叉口交织段换道冲突为研究重点,提出一种考虑近邻交叉口饱和流状态下换道安全的交叉口间距临界值模型。利用交通仿真技术对低于间距临界值的近邻交叉口进行定时定向交通管制策略优化,基于不同间距背景下管制效果的差异性,建立适宜采用定时定向交通管制策略的交叉口间距函数模型,通过交通冲突分析软件对下游交叉口交织段进行安全性评价。研究表明:当交叉口间距低于模型临界值时,定向交通管制的效果明显,车辆延误和换道冲突次数随着间距变小分别降低了14.4%和61.3%。在城市路网中的近邻小间距交叉口高峰期采用定时定向交通管制下游交叉口交织段的方法,可以释放下游交叉口的通行能力,保证车辆通过交织段的安全性。In order to improve the capacity and traffic safety of urban near-neighbor signalized intersections with small spacing during peak periods,a model of intersection spacing threshold considering the safety of lane changing under saturated flow condition of near-neighbor intersections is proposed,focusing on the lane changing conflict in the downstream intersection weaving section. Traffic simulation technology is used to optimize the timing-directional traffic control strategy for near-neighbor intersections below the spacing threshold,based on the differences in control effects under different spacing backgrounds,the intersection spacing function model suitable for the timing-directional traffic control strategy is established,and the safety evaluation of weaving sections of downstream intersections is performed by traffic conflict analysis software. The study shows that when the intersection spacing is lower than the critical value of the model,the effect of directional traffic control is obvious,and the number of vehicle delays and lane change conflicts are reduced by 14. 4% and 61. 3%,as the spacing becomes smaller. The use of timing directional traffic control of the downstream intersection weaving section during the peak period of small spacing intersections in the urban road network can release the capacity of the downstream intersection and ensure the safety of vehicles through the weaving section.

关 键 词：小间距交叉口 换道冲突 定向交通管制 车辆延误 

分 类 号：U491.2[交通运输工程—交通运输规划与管理]