The Curve Family of Vehicular Inter-green Time and Safety Reliability at Signalized Intersections

被引：0
|
作者：
Jiang Z.-H. [1 ]
Pan F. [1 ]
Wang T. [2 ]
Yang X.-G. [1 ]
机构：
[1] Key Laboratory of Road and Traffic Engineering, Ministry of Education, Tongji University, Shanghai
[2] School of Naval Architecture, Ocean & Civil Engineering, Shanghai Jiaotong University, Shanghai
来源：
Jiaotong Yunshu Xitong Gongcheng Yu Xinxi/Journal of Transportation Systems Engineering and Information Technology | 2018年 / 18卷 / 05期
基金：
中国国家自然科学基金;
关键词：
Curve family; Inter-green time; Monte Carlo simulation; Reliability theory; Safety reliability; Traffic engineer;
D O I：
10.16097/j.cnki.1009-6744.2018.05.011
中图分类号：
学科分类号：
摘要：
In order to improve the safety of signalized intersections (hereinafter "intersections"), a approach to calculate the vehicular inter-green time based on safety reliability is put forward, and the curve family of vehicular inter-green time (VIGT) and safety reliability at intersections is drawn. Firstly, classical calculating methods of VIGT at intersections are summarized. Secondly, the calculating method VIGT based on safety reliability is modeled. Thirdly, based on Monte Carlo algorithm which can simulate the interactive process of reaction time and vehicular deceleration, the model is solved. Finally, according to the simulation results, the carve family of VIGT and safety reliability is drawn, which is under some typical intersection widths (15~35 m), vehicular speeds (15~ 40 km/h) and safety reliability values (50%~95%). Results show that the core defect of classical calculating methods of VIGT is that they lacked the consideration of the randomness of vehicular behavior parameters in lane group. The VIGT is influenced by multiple factors and obey the normal distribution, in addition, the sensitivity analysis shows that the VIGT was the most sensitive to reaction time (32.46%) and vehicular deceleration (24.68%). Considering safety reliability into the calculation process of VIGT, on the one hand, provides a new approach which is based on probability theory, on the other hand, lays the foundation of quantitatively assessing the safety of VIGT at intersections. Copyright © 2018 by Science Press.
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页码：67 / 74
页数：7
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