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基于元胞自动机的无信号人行横道处人车干扰机理研究 预览

Mechanism study on the interference between pedestrians and vehicles at unsignalized mid-block crosswalks based on cellular automata
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摘要 为了更准确地模拟行人与机动车的干扰机理,提出了基于元胞自动机的人车干扰模型。模型主要由机动车避让模型、行人过街决策模型以及运动模型组成。该模型不仅考虑了行人的主动性决策行为,还考虑了机动车的主动避让行为,重点分析了人行横道等候区域处,行人对机动车避让行为的影响。仿真结果显示,机动车旅行时间随着机动车限制速度的提高而减小,逐渐趋于平缓;机动车的饱和流量随着行人到达率的增加而降低;机动车的延误随着等候区人数的增加由线性增加逐步趋于平缓。 In order to simulate the mechanism of interference between pedestrians and vehicles more accurately,a pedestrian-vehicle interference model based on cellular automata was proposed in consideration of pedestrian in waiting areas.The interference model consisting of vehicle yielding model,pedestrian crossing decision model and motion model was presented.The model not only considered the pedestrian's active decision-making behavior,but also considered the yielding behavior of the vehicle,focusing on the pedestrians'influence on the yielding behavior of vehicle at the crosswalk waiting area.The simulation results show that the travel time of the vehicle decreases with the increase of the speed limit of the vehicle,and gradually tends to be flat.The saturation flow of a vehicle decreases as the pedestrian arrival rate increases.The delay of vehicle tends to flatten gradually from linear increase as the number of people in the waiting area increases.
作者 程建辉 李得伟 CHENG Jian-hui;LI De-wei(School of Traffic and Transportation,Beijing Jiaotong University,Beijing 100044 ,China)
出处 《山东科学》 CAS 2019年第1期83-92,共10页 Shandong Science
基金 教育部中央高校基本科研业务费(2016JBM020) 国家自然科学基金(61403022) 国家重点研发计划(2018YFB1201402 2016YFE0201700).
关键词 无信号人行横道 元胞自动机 行人 机动车 人车干扰 unsignalized crosswalks cellular automata pedestrian vehicle pedestrian-vehicle interference
作者简介 程建辉(1993-),男,硕士,研究方向为交通规划与管理。E-mail:16120949@bjtu.edu.cn
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