无人驾驶背景下降雨对城市交通信号控制的影响研究  

Study on the influence of rainfall on urban traffic signal control under the background of unmanned vehicle

作　　者：安喜才 严凌[1] 梁士栋 陈玉蓉 AN Xicai;YAN Ling;LIANG Shidong;CHEN Yurong(Business School,University of Shanghai for Science and Technology,Shanghai 200093,China)

机构地区：[1]上海理工大学管理学院,上海200093

出　　处：《智能计算机与应用》2020年第2期188-193,共6页Intelligent Computer and Applications

摘　　要：本文考虑在无人驾驶汽车的行车环境下,以交通流理论为基础,对比分析降雨天气和正常天气下的汽车速度、车头间距、路面摩擦系数等数据指标,探究降雨对无人驾驶背景下的城市典型交叉口交通信号控制的影响。然后从降雨强度对这些数据指标的影响展开对城市道路运行参数的分析,建立雨天速度修正模型、雨天路面摩擦系数模型,并进行模型验证。研究得出随着降雨强度的变大,交通量变小,信号控制周期时长变短。其结果就是降雨强度的变化引起信号控制周期时长变化,需要在降雨时及时根据降雨强度调整信号配时方案。Based on the traffic flow theory,this paper studies the influence of rainfall on traffic signal control at typical urban intersections under the background of driverless vehicles(the vehicle can adjust the driving state automatically according to the information obtained by the on-board camera and sensor),by comparing and analyzing data such as vehicle speed,distance between vehicle heads and road friction coefficient in rainy weather and normal weather.Then,from the influence of rainfall intensity on these data indicators,the paper analyzes the running parameters of urban roads,establishes the velocity correction model and the friction coefficient model in rainy days,and verifies the model.It is concluded that with the increase of rainfall intensity,the traffic volume decreases and the signal control cycle time becomes shorter.The result is that the change of rainfall intensity causes the change of signal control cycle length,so it is necessary to adjust the signal timing scheme according to rainfall intensity in time.

关 键 词：无人驾驶汽车 交通流 交通信号控制 路面摩擦系数 降雨强度 

分 类 号：U491.54[交通运输工程—交通运输规划与管理]