交通运输系统工程与信息 ›› 2024, Vol. 24 ›› Issue (6): 326-338.DOI: 10.16097/j.cnki.1009-6744.2024.06.029

• 工程应用与案例分析 • 上一篇    

小净距“隧道—互通”路段车辆行驶轨迹特征研究

罗霜*a,b,杨书群b,徐进b   

  1. 重庆交通大学,a.智能综合立体交通重庆市重点试验室;b.交通运输学院,重庆400074
  • 收稿日期:2024-04-26 修回日期:2024-06-30 接受日期:2024-07-08 出版日期:2024-12-25 发布日期:2024-12-18
  • 作者简介:罗霜(1990- ),男,重庆北碚人,讲师,博士。
  • 基金资助:
    国家自然科学基金 (52302431);重庆市研究生联合培养基地建设项目/(JDLHPYJD2021006);重庆交通大学研究生科 研创新项目(2023S0057)。

Vehicle Trajectory Characteristics on Tunnel-interchange Section with Short Connection

LUOShuang*a,b,YANG Shuqunb, XU Jinb   

  1. a. Chongqing Key Laboratory of Intelligent Integrated and Multidimensional Transportation System; b. College of Traffic and Transportation, Chongqing Jiaotong University, Chongqing 400074, China
  • Received:2024-04-26 Revised:2024-06-30 Accepted:2024-07-08 Online:2024-12-25 Published:2024-12-18
  • Supported by:
    NationalNaturalScienceFoundation of China (52302431);Joint Training Base Construction Project for Graduate Students in Chongqing (JDLHPYJD2021006);ResearchandInnovation Program for Graduate Students in Chongqing Jiaotong University (2023S0057)。

摘要: 为明确下匝道车辆在小净距“隧道—互通”的轨迹特征,通过实车驾驶试验采集包茂高速黄草互通至保家互通的行驶数据,研究小净距“隧道—互通”的驾驶人车道选择行为,揭示下匝道驶出点位置、驶出纵/横向位移和平均横移率分布规律,探明净距和驾驶人因素对驶出特征的影响,构建轨迹特征关系模型。结果表明:驾驶人在小净距“隧道—互通”无明显车道偏好性,容易错过主线出口;随着净距降低,隧道入口段换道占比增加,隧道出口开放段换道占比减少,靠近分流点下匝道的车辆增多,驶出纵向位移呈减小趋势,驶出横向位移和平均横移率呈增大趋势;当净距不超过170m时,小净距“隧道—互通”的驶出特征与常规互通出口存在显著差异,说明净距减小,车辆换道和下匝道难度增加,运行风险增大;在小净距连接段上,女性和不熟悉路线的驾驶人换道较晚,驶出纵向位移小,经验不足的驾驶人下匝道时容易一次连续变更两条车道,驶出横向位移大,下匝道过程风险高。

关键词: 交通工程, 轨迹特征, 实车试验, 小净距“隧道—互通”, 运行风险, 个体差异

Abstract: To investigate the trajectory characteristics of diverging vehicles on the tunnel-interchange section with short connection, this paper collected driving data from driving experiment conducted from Huangcao Interchange to Baojia Interchange of Baomao Expressway. Drivers' lane choice along the tunnel-interchange section with short connection were analyzed. Distributions were evaluated for the diverging sites, longitudinal and lateral distances of diversion, and average sideway rates. The study also analyzed the effects of the connection length between the tunnel and the interchange, driver factors, and developed the trajectory characteristics model. The results show that drivers have no obvious lane preference and are more likely to miss the mainline exit in the tunnel-interchange section with short connection. With a reduction in length of the connection, the proportion of lane change increases in the tunnel entrance while decreases in the tunnel exit, the number of vehicles approaching the diversion point increases, the longitudinal diverging length exhibits a decreasing trend while the lateral displacement and the average traverse rate show an increasing trend. When the length of the connection is no more than 170 meters, there is a significant difference in the diverging characteristics between the tunnel-interchange section with short connection and the common interchange exit. These indicate with a reduction in length of the connection, the difficulty of vehicle lane change and diversion increase, and operation risk increase. On the short connection, the female drivers and the drivers who are not familiar with the route tend to change lane late, and the longitudinal diverging length is short. The inexperienced drivers are prone to changing directly from the left lane to the taper of the interchange, resulting in large lateral displacement, which might associate with high risk in diverging.

Key words: traffic engineering, trajectory characteristics, field test, tunnel-interchange section with short connection; driving risk, individual difference

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