高速公路二次事故风险预警与可变限速控制策略研究
Risk Warning and Variable Speed Limit Control Strategy for Secondary Accidents on Freeways Strategy
朱晓东 1罗瑞琪1
作者信息
- 1. 中国市政工程华北设计研究总院有限公司,天津 300074
- 折叠
摘要
为降低高速公路二次事故发生几率,提高高速公路行车安全和通行效率,创新研究了高速公路二次事故风险预警与可变限速控制策略.首先,基于采集得到的交通流数据,选用贝叶斯随机效应 Logit 模型来构建一种二次事故风险预测模型,预测高速公路上一次事故引起二次事故的概率;其次,开发可变限速控制策略,根据一次事故发生后道路交通流的实时变化,自动调节高速公路的限速值;最后,通过可变信息情报板对限速值进行发布,并进行上下游协调控制,对高速公路交通流运行进行主动干预,主动调节车辆运行速度等,从而预防二次事故的发生.
Abstract
In order to reduce the probability of secondary accidents on highways,improve driving safety and traffic efficiency,innovative research has been conducted on risk warning and variable speed limit control strategies for secondary accidents on highways.Firstly,based on the collected traffic flow data,a Bayesian random effects logit model is selected to construct a secondary accident risk prediction model to predict the probability of a secondary accident caused by a single accident on a highway.Secondly,a variable speed limit control strategy is developed to automatically adjust the speed limit value of the highway based on the real-time changes in road traffic flow after an accident occurs.Finally,the speed limit values are released through variable information boards,and upstream and downstream coordination and control are carried out to actively intervene in the operation of highway traffic flow,adjust vehicle operating speed,etc.,in order to prevent the occurrence of secondary accidents.
关键词
高速公路/智能交通/风险预警/可变限速/行车安全Key words
Expressway/Intelligent transportation/Risk warning/Variable speed limit/Driving safety引用本文复制引用
出版年
2024
NETL
NSTL
万方数据