中文核心期刊
CSCD来源期刊
中国科技核心期刊
RCCSE中国核心学术期刊

重庆交通大学学报(自然科学版) ›› 2019, Vol. 38 ›› Issue (09): 95-100.DOI: 10.3969/j.issn.1674-0696.2019.09.16

• 交通运输工程 • 上一篇    下一篇

高速公路单向双车道车辆群行车风险度量研究

容颖,温惠英,赵胜   

  1. (华南理工大学 土木与交通学院,广东 广州 510641)
  • 收稿日期:2018-01-25 修回日期:2018-11-16 出版日期:2019-09-18 发布日期:2019-09-18
  • 作者简介:容颖(1991—),女,广西玉林人,博士研究生,主要从事交通安全、交通流理论、动力系统分析等研究。E-mail: ry22511@163.com。 通信作者:赵胜(1988—),男,山东临沂人,实验师,主要从事交通安全、交通设计、驾驶行为分析等研究。E-mail: ctszhao@scut.edu.cn。
  • 基金资助:
    国家自然科学基金项目(51578247;51378222)

Study on Driving Risk Measurement for Two-lane Freeway Vehicle Group

RONG Ying, WEN Huiying, ZHAO Sheng   

  1. (School of Civil Engineering and Transportation, South China University of Technology, Guangzhou 510641, Guangdong, P. R. China)
  • Received:2018-01-25 Revised:2018-11-16 Online:2019-09-18 Published:2019-09-18

摘要: 为了探讨局部车辆流的安全性及其对道路安全性的影响,从“车辆群”的角度研究了高速公路行车风险度量。提出了高速公路单向双车道“车辆群”范围的划分方法;分析了“车辆群”内可能存在的侧向碰撞、侧面刮擦、追尾碰撞等冲突类型,针对各冲突类型选取了“车辆群”风险度量的碰撞时间TTC和后侵入时间PET这2个指标,提出了双车道“车辆群”行车风险度量模型,并用VISSIM对模型进行了仿真分析。结果表明:由于车辆换道的影响,双车道“车辆群”并不仅仅是两个单车道相邻车辆的对应合并;对道路上的车辆流进行“车辆群”划分后再评估车辆的行车风险,可以缩小道路上潜在危险区域的排查范围,提高高速公路行车风险识别效率;出现冲突风险警告的“车辆群”内车辆速度的偏差程度远远大于其他的“车辆群”,从而验证了模型的有效性。

关键词: 交通工程, 高速公路, 行车风险度量, 碰撞时间, 后侵入时间

Abstract: To find out how local vehicle flow influences road safety, a driving risk measurement was done for two-lane freeway vehicles by means of vehicle group. A method for the range of vehicle-group was proposed to analyze such possible conflicts as lateral collision, side scraping, rear-end collision. Reasonable measurement index for each was selected for the driving-risk measurement model of the two-lane highway based on time-to-collision (TTC) and post encroachment time (PET). The models feasibility was finally confirmed with a case study of VISSIM simulation. The results show that, according to the vehicles lane-changing behaviors, the two-lane vehicle group is not just a merge of the opposite vehicles on a two-lane freeway, that evaluating its driving risk can shorten the check of the potential area, improve its risk identification, and that the risk warning for deviation of running speeds through velocity analysis is far greater than others, which proves the efficiency of the model.

Key words: traffic engineering, freeway, driving risk measurement, time-to-collision (TTC), post encroachment time (PET)

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