Traffic characteristics and safety analysis of expressway off-ramp junction

被引：1
|
作者：
Chen Y.-H. [1 ]
Wu C.-J. [1 ]
Bai Q.-W. [1 ]
Xiong S. [2 ]
Li W.-N. [1 ]
Li H.-N. [1 ]
机构：
[1] College of Transportation, Jilin University, Changchun
[2] North China Municipal Engineering Design and Research Institute Limited Company, Tianjin
来源：
Zhejiang Daxue Xuebao (Gongxue Ban)/Journal of Zhejiang University (Engineering Science) | 2022年 / 56卷 / 02期
关键词：
Lane changing characteristic; Ramp junction section; Safety analysis; Statistical analysis; Traffic conflict;
D O I：
10.3785/j.issn.1008-973X.2022.02.019
中图分类号：
学科分类号：
摘要：
In order to explore the driving behavior and safety characteristics of the junction between the off-ramp and the downstream intersection, combined with the measured track data of lane changing vehicles, the track characteristics and the lane changing position characteristics of the ramp junction vehicles were analyzed. Using the traffic conflict technology, the risk of vehicle lane changing was analyzed with post encroach time (PET) as the index, and the ordered probability model was established to identify the factors affecting the severity of the conflict. Results show that the Lorentz distribution model can be used to fit the vehicle lane change position. The lane change type and the number of lane crossing have significant effects on the vehicle lane change position, and the lane change position is closer to the beginning of the junction when the lane change is forced and the lane crossing is multi-lane. Compared with the ordinary junction section, the driving risk of the ramp junction section is higher, and the main conflict type is crossover conflict. The saturation of junction section, lane change position, cross conflict, forced lane change and illegal lane change are significantly related to the severity of conflict. The stability of the headways in the off-ramp junction section is poor during the green phase, and the lane changing interference of the queuing vehicle in the interweaving section is serious. Copyright ©2022 Journal of Zhejiang University (Engineering Science). All rights reserved.
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页码：379 / 387
页数：8
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