快速路合流区主线不同交通状态下的安全性分析

doi:DOI:10.13229/j.cnki.jdxbgxb20210014

摘要/Abstract

摘要：

为了探究快速路合流区主线的安全性，首先结合交通数据和有关研究，运用统计学方法分析了内侧车道和中间车道的平均速度与事故率的关系。接着，结合平均速度-事故率、Greenberg和Underwood模型，分别构建了交通密度k较大和较小时内侧车道和中间车道的事故率-交通密度模型（AR-k）。然后，从定性和定量的角度依次分析了两车道的k和累计车辆数n对交通安全的影响，结果表明，无论在哪个车道以及k较小或较大，n和k对AR都存在着较大的影响。最后，从控制合流区交通量和限制车速两个方面提出了改善交通安全的措施。

关键词: 交通工程, 快速路合流区, 交通密度, 事故率, 交通安全

Abstract:

In order to explore the safety of the mainline in expressway confluence area， firstly， based on the traffic data and related research， the relationship between average speed and accident rate of the inner lane and the middle lane is analyzed by using statistical methods， then， combined with models of average speed-accident rate， Greenberg and Underwood， traffic density-accident rate models（AR-k） of inner lane and middle lane with larger and smaller traffic density k are constructed respectively， and then， influence of k of two lane and cumulative number of vehicles n on traffic safety is analyzed from the qualitative and quantitative point of view， results show that that n and k have a great influence on AR no matter in which lane and whether k is small or large. Finally， some measures to improve traffic safety are put forward from two aspects of controlling traffic volume and limiting the speed in confluence area.

Key words: traffic engineering, expressway confluence area, traffic density, accident rates, traffic safety

中图分类号:

U491.31

张鑫,张卫华. 快速路合流区主线不同交通状态下的安全性分析[J]. 吉林大学学报(工学版), 2022, 52(6): 1308-1314.

Xin ZHANG,Wei-hua ZHANG. Safety analysis of main line under different traffic conditions in expressway confluence area[J]. Journal of Jilin University(Engineering and Technology Edition), 2022, 52(6): 1308-1314.

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