重庆理工大学学报2025，Vol.39Issue(1)：111-116,6.DOI:10.3969/j.issn.1674-8425(z).2025.01.014
长隧道动态控速与车速离散度优化
Optimization of dynamic speed control and vehicle speed dispersion in long tunnels
摘要
Abstract
Controlling the overspeed and speed deviation of vehicles in long tunnels improves the safety of traffic operation.Based on the positive correlation between the velocity dispersion and the accident rate,we build a dynamic speed control model of tunnel edge rate LED lamp with the minimum velocity dispersion as the first-order objective function and the minimum average velocity as the second-order objective function.Taking a tunnel in Chongqing as the research object,based on the speed at the beginning and end sections of the dynamic speed control interval and the calibrated dynamic speed control model,we make a numerical analysis to obtain the speed dispersion and average speed of the sections before and after the optimization of each speed interval.Among them,the average speed in the three speed intervals[70,80),[80,90)and[90,100]is down by 10.5%,8.3%and 6.8%.Meanwhile,the standard deviation of speed is cut by 16.7%,12.8%and 9.4%respectively.The overall average speed and standard deviation of speed decreases by 8.7%and 9.2%.Our results show the dynamic speed control model based on edge rate is able to reduce the overall speed and speed dispersion.关键词
长隧道/边缘率/速度感知/动态控速/车速离散度Key words
long tunnel/edge rate/speed perception/dynamic speed control/speed dispersion分类
交通工程引用本文复制引用
刘伟,包宇宁,饶畅..长隧道动态控速与车速离散度优化[J].重庆理工大学学报,2025,39(1):111-116,6.基金项目
重庆市建设科技计划项目(20230102) （20230102）
重庆市交通规划研究院交通运输工程研究生联合培养基地项目(JDLHPYJD2018004) （JDLHPYJD2018004）
