交通运输系统工程与信息 ›› 2014, Vol. 14 ›› Issue (3): 131-136.

• 系统工程理论与方法 • 上一篇    下一篇

城市道路过街行人风险感知及决策损失研究

程国柱 1,刘博通 2,吴立新*3   

  1. 1. 哈尔滨工业大学 交通科学与工程学院,哈尔滨 150090;2. 中国城市规划设计研究院西部分院,重庆 401120; 3. 吉林建筑大学 交通科学与工程学院,长春 130018
  • 收稿日期:2013-10-15 修回日期:2014-01-14 出版日期:2014-06-25 发布日期:2014-07-10
  • 作者简介:程国柱(1977-),男,吉林长春人,副教授,博士.
  • 基金资助:

    吉林省自然科学基金项目资助(201215176).

Urban Road Crossing Pedestrian Risk Perception and Decision Loss

CHENG Guo-zhu1,LIU Bo-tong2,WU Li-xin3   

  1. 1.School of Transportation Science and Engineering, Harbin Institute of Technology, Harbin 150090, China; 2. China academy of urban planning & design western branch, Chongqing 401120, China; 3. chool of transportation science and Engineering,School of transportation science and Engineering,Changchun 401120, China
  • Received:2013-10-15 Revised:2014-01-14 Online:2014-06-25 Published:2014-07-10

摘要:

为了给城市道路过街行人安全通行提供决策依据,通过进行过街行人决策风险 试验,对过街行人的感知风险及决策行为进行了分析.给出了过街行人感知风险随机动车 速度变化的规律及过街行人决策行为的损失函数,基于概率论构建了过街行人碰撞风险 概率模型,并标定了在不同车速等级下过街行人的行车延误和碰撞风险损失.研究结果表 明,当行车速度较低时,过街行人采取穿越策略最优;当行车速度处于中等时,过街行人 采取等待或穿越策略损失相差不大,但以穿越较优;当行车速度较高时,由于风险过高, 行人不宜选择穿越,即使过街延误时间增长,对于自身的最优策略应该是等待.

关键词: 城市交通, 过街行人, 决策行为, 碰撞风险, 损失函数

Abstract:

To provide decision gist for pedestrians in urban road crossing, the paper carries on experiment of pedestrian decision risk, and analyzes pedestrian perceptional risk and decision. Changing rule of pedestri- an perceptional risk with vehicle speed variation is examined, and pedestrian decision loss function is estab- lished. Collision risk probability model is also formulated based on the probability theory. Delay and colli- sion risk loss caused by pedestrian decision are calibrated, respectively. The result shows that crossing is the best decision for pedestrian at low vehicle speed; at medium vehicle speed, there is no evident difference for pedestrian between waiting and crossing, but crossing has fewer losses; at high vehicle speed, pedestrian should not cross for high risk. Even though crossing delay increases, the best solution for pedestrian should be waiting.

Key words: urban traffic, crossing pedestrian, decision behavior, collision risk, loss function

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