基于元胞自动机的高速公路临时瓶颈交通流仿真

江欣国; 夏亮

doi:10.3969/j.issn.0258-2724.2016.01.019

基于元胞自动机的高速公路临时瓶颈交通流仿真

doi: 10.3969/j.issn.0258-2724.2016.01.019

江欣国^1,2,
夏亮^1,2

基金项目:

国家自然科学基金资助项目(71271176)

四川省青年基金资助项目(2014JQ0014)

详细信息

作者简介:
江欣国(1975-),男,教授,博士,研究方向为交通安全,E-mail:xjiang@swjtu.edu.cn

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- 文章访问数: 855
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- PDF下载量: 508
- 被引次数: 0
出版历程
- 收稿日期: 2015-03-09
- 刊出日期: 2016-01-25

Simulation of Temporary Traffic Bottleneck on Highways Based on Cellular Automaton

JIANG Xinguo^1,2,
XIA Liang^1,2

摘要

摘要: 为研究强制换道及冲突点分布对高速公路临时瓶颈交通流的影响,在NS(NaSch)模型和STCA(symmetric two-lane cellular automata)模型的基础上,引入强制换道规则,根据瓶颈口上游驾驶员心理状态的变化,建立高速公路瓶颈交通流模型.在开口边界条件下,针对不同的安全换道概率、强制换道概率、冲突点距离和冲突区间长度参数,模拟得到瓶颈交通流量和换道频率与车辆到达率的关系.仿真结果表明,安全换道行为对系统流量影响小;强制换道行为是降低瓶颈系统最大流量的主要因素,当安全换道概率为0.5时,强制换道概率从0.0增加至0.1,最大流量下降了17%;冲突点距离的增加缓解了交通拥堵程度,当冲突点距离从1 cell增加至4 cell时,临界车辆到达率上升了4%;冲突区间长度对交通事故风险的影响较大,最大强制换道频率随冲突区间长度的增加而增加.
- 元胞自动机 /
- 瓶颈交通 /
- 强制换道 /
- 交通冲突
Abstract: To study the influence of the forced lane changing and the distribution of conflict points on the temporary traffic bottleneck flow of freeways, a cellular automaton model was proposed considering the driver's changing psychology behavior. The new model combines the rule of forced lane changing with the NaSch (NS) model and the symmetric two-lane cellular automaton (STCA) model. Under open boundary, the relationship between the traffic flow at the bottleneck, the lane-changing frequency and the car arrival rate were obtained by simulation with different safe lane-changing probabilities, forced lane changing probabilities, distance between conflict areas, and length of conflict area. The results show that safe lane-changing behavior has little influence on the flow. The main factor decreasing the maximum flow is the forced lane changing behavior at the bottleneck. When the safe lane-changing probability is 0.5 and the forced lane changing probability changes from 0.0 to 0.1, the maximum flow decreases by 17%. The length of conflict area helps to reduce the traffic congestion at the bottleneck. When the range length of conflict area changes from 1 to 4 cells, the critical car arrival rate increases by 4%. The traffic conflict area has significant influence on the traffic safety risk, which could increase with the lane-changing probability.
- cellular automaton /
- traffic bottleneck /
- forced lane changing /
- traffic conflict

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参考文献(19)

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文章访问数: 855
HTML全文浏览量: 63
PDF下载量: 508
被引次数: 0

基于元胞自动机的高速公路临时瓶颈交通流仿真

doi: 10.3969/j.issn.0258-2724.2016.01.019

作者简介: 江欣国(1975-),男,教授,博士,研究方向为交通安全,E-mail:xjiang@swjtu.edu.cn

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出版历程

Simulation of Temporary Traffic Bottleneck on Highways Based on Cellular Automaton

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作者简介:
江欣国(1975-),男,教授,博士,研究方向为交通安全,E-mail:xjiang@swjtu.edu.cn