山东科学 ›› 2022, Vol. 35 ›› Issue (2): 115-123.doi: 10.3976/j.issn.1002-4026.2022.02.014

• 交通运输 • 上一篇    下一篇

城市快速路交通事故特性分析与安全评价

单亚男1,李树彬1,2,*(),林兆丰1   

  1. 1.山东建筑大学 交通工程学院,山东 济南 250101
    2.山东警察学院 交通管理工程系,山东 济南 250014
  • 收稿日期:2021-03-30 出版日期:2022-04-20 发布日期:2022-04-07
  • 通信作者: 李树彬 E-mail:li_shu_bin@163.com
  • 作者简介:单亚男(1994—),女,硕士研究生,研究方向为交通运输工程。
  • 基金资助:
    国家自然科学基金(71871130);国家自然科学基金(71971125)

Analysis of traffic accident characteristics and safety evaluation of urban expressways

SHAN Ya-nan1,LI Shu-bin1,2,*(),LIN Zhao-feng1   

  1. 1. School of Traffic Engineering, Shandong Jianzhu University, Jinan 250101, China
    2. Department of Traffic Management Engineering,Shandong Police College, Jinan 250014, China
  • Received:2021-03-30 Online:2022-04-20 Published:2022-04-07
  • Contact: Shu-bin LI E-mail:li_shu_bin@163.com

摘要:

通过分析济南市快速路交通事故统计数据,分别从时空分布、事故形态、事故发生原因等角度探究了城市快速路交通事故的特性。通过提取事故发生前5 min内的车型比数据和交通流量数据,并分析其与交通事故之间的规律性特征,构建基于色阶图的事故风险安全评价表,根据概率统计模型推算出事故发生的临界流量,最后综合以上数据分析构建快速路事故风险安全评价模型。数据拟合结果表明,根据当前交通流量和车型比例实时评估快速路的交通流运行安全风险,可以通过调控当前交通流量对可能发生的事故进行预警。针对快速路交通事故规律和特点,提出了事故预防及安全管理对策与措施,以达到预防事故发生、提升快速路运行安全水平的目的。

关键词: 交通事故, 交通流量, 车型比, 事故临界流量

Abstract:

By analyzing the statistical data of traffic accidents on expressways in Jinan, this paper explores the characteristics of traffic accidents on expressways in cities from the perspectives of time and space distribution, accident types, and causes. By extracting the vehicle type ratio data and traffic flow data within 5 minutes before an accident and analyzing the regular characteristics between them and traffic accidents, an accident risk safety evaluation table based on the color scale is constructed and the critical flow of accidents is calculated according to the probability and statistical model. Finally, the accident risk safety evaluation model of an expressway is constructed based on the above data analysis. Data fitting results show that the traffic flow operation safety risk of an expressway can be evaluated in real time according to the current traffic flow and vehicle type ratio, and forewarning regarding probable accidents can be provided by regulating the current traffic flow. Based on the patterns and characteristics of expressway traffic accidents, this paper proposes measures for accident prevention and safety management to prevent accidents and improve the safety level of expressway operation.

Key words: traffic accidents, traffic flow, vehicle type ratio, critical flow of accidents

中图分类号: 

  • U491