考虑车辆与车辆和车辆与行人冲突的左转相位选择

IF 7.4 2区 工程技术 Q1 ENGINEERING, CIVIL
Kakan C. Dey , Md Tawhidur Rahman , Subasish Das , Amrit Manova Williams
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引用次数: 0

摘要

由于与对面直通车和行人发生冲突的可能性更高,在允许左转阶段的信号交叉口左转车辆的移动会带来安全问题。在本研究中,进行了一项基于模拟的研究,以评估行人对允许左转阶段场景中左转车辆和对面直通车之间的交通冲突(V-V冲突)以及左转车辆和行人之间的交通碰撞(V-P冲突)的影响。在交通微模拟器VISSIM中对具有不同反向直行交通量、左转交通量、反向直行车道数和行人交通量的交叉口进行了建模。使用替代安全评估模型(SSAM)来估计V-V和V-P冲突的数量。行人在场对V-V和V-P冲突的影响使用有行人在场和无行人在场的模拟场景进行了评估。仿真结果表明,行人的存在增加了V-V和V-P冲突。由于行人的存在增加了交通冲突的总数,与无行人的情况相比,允许左转阶段处理更少的左转车辆,以保持有行人存在的十字路口安全水平。由于目前的左转相位决策指南没有考虑行人存在的影响,本研究量化了受行人影响和涉及行人的左转交通冲突,以确定适当的左转信号相位决策,以确保行人和车辆在信号交叉口安全高效地通过。这项基于模拟的研究结果可以通过收集现场数据(通常是资源密集型的),有利于左转弯相位选择的决策,就像前后交叉口安全性能分析一样。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Left-turn phasing selection considering vehicle to vehicle and vehicle to pedestrian conflicts

Left-turning vehicle movement at signalized intersections with permissive left-turn phases creates safety concerns due to the higher chance of conflict with opposing-through vehicles and pedestrians. In this research, a simulation-based study was conducted to evaluate pedestrians' impact on traffic conflicts between left-turning vehicles and opposing-through vehicles (V-V conflicts) as well as traffic conflicts between left-turning vehicles and pedestrians (V-P conflicts) in the permissive left-turn phasing scenario. Intersections with different opposing-through volumes, left-turn volumes, number of opposing-through lanes, and pedestrian volumes were modeled in VISSIM, a traffic micro-simulator. The surrogate safety assessment model (SSAM) was used to estimate the number of V-V and V-P conflicts. The effect of pedestrian presence on V-V and V-P conflicts was evaluated using simulation scenarios with and without pedestrian presence. Simulation results revealed that pedestrian presence increased both V-V and V-P conflicts. As pedestrian presence increased the total number of traffic conflicts, permissive left-turn phasing processed fewer left-turn vehicles to maintain the same level of intersection safety with pedestrian presence compared to the no-pedestrian scenario. Since current left-turn phasing decision guidelines do not consider the impacts of pedestrian presence, this research quantified pedestrian-influenced and pedestrian-involved left-turn traffic conflicts to determine appropriate left-turn signal phasing decisions to ensure safe and efficient crossing of pedestrians and vehicles at signalized intersections. This simulation-based study's findings can be beneficial in the decision making of left-turn phasing selection as the before-after intersection safety performance analysis by collecting field data often resources intensive.

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来源期刊
CiteScore
13.60
自引率
6.30%
发文量
402
审稿时长
15 weeks
期刊介绍: The Journal of Traffic and Transportation Engineering (English Edition) serves as a renowned academic platform facilitating the exchange and exploration of innovative ideas in the realm of transportation. Our journal aims to foster theoretical and experimental research in transportation and welcomes the submission of exceptional peer-reviewed papers on engineering, planning, management, and information technology. We are dedicated to expediting the peer review process and ensuring timely publication of top-notch research in this field.
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