车载行人预警系统的多智能体交通仿真与效果比较研究  

Multi-agent Traffic Simulation and Effect Comparison of Vehicle Pedestrian Warning System

作　　者：柴智勇[1,2] 谷阳阳 史雪莹[3] 孙智诚 徐婷 朱彤 CHAI Zhiyong;GU Yangyang;SHI Xueying;SUN Zhicheng;XU Ting;ZHU Tong(China Automotive Technology Research Center,Tianjin 300300,China;China Vehicle Forensic Center&Beijing,Beijing 100176,China;School of Automobile,Chang’an University,Xi’an 710064,China)

机构地区：[1]中国汽车技术研究中心,天津300300 [2]北京中机车辆司法鉴定中心,北京100176 [3]长安大学汽车学院,西安710064

出　　处：《武汉理工大学学报（交通科学与工程版）》2021年第2期231-236,共6页Journal of Wuhan University of Technology（Transportation Science & Engineering）

基　　金：国家重点研发计划项目(2018YFC0807500)。

摘　　要：车载行人预警系统虽然能够在短时微观场景下提高行人过街安全性,但在交通流长时间运行下的安全效用有待验证.考虑到无信号控制路段人行横道处行人过街具有较高风险性,运用NetLogo软件搭建道路场景,构建车辆和行人智能体仿真模型.用人车冲突数表征行人过街安全性,探究无预警系统车辆、行人检测系统和人车通讯系统车辆在不同道路限速值、交通流量和行人规模下的安全效用差异.研究结果表明:与无预警系统车辆相比,行人检测系统车辆的安全效用在较低的道路限速值下才较为明显,车辆的等待时间只在车流量、行人规模较高情况下较短,行人等待时间只在车流量大时较短;道路交通流量越高,各系统安全效用差距越小;在过街行人流量较小时,行人检测系统和人车通讯系统的安全效用差距不大;相同道路条件下人车通讯系统车辆的平均车速持续下降一段时间后呈稳态.Although the vehicle-mounted pedestrian warning system can improve the safety of pedestrians crossing streets in short-term microscopic scenes,its safety effectiveness needs to be verified under long-term traffic flow.Considering the high risk of pedestrian crossing at the crosswalk in the section without signal control,the NetLogo software was used to build the road scene and construct the simulation model of vehicle and pedestrian agent.The pedestrian crossing safety was characterized by the number of conflicts between people and vehicles,and the safety utility differences of vehicles without early warning system,vehicles with pedestrian detection system and vehicles with human-vehicle communication system under different road speed limit values,traffic flow and pedestrian scale were explored.The results show that,compared with vehicles without early warning system,the safety utility of vehicles with pedestrian detection system is more obvious at lower road speed limit.The waiting time of vehicles is short only when the traffic volume and pedestrian scale are high,and the waiting time of pedestrians is short only when the traffic volume is large.The higher the traffic flow,the smaller the gap of safety utility of each system.When the pedestrian flow is small,there is little difference between the safety utility of pedestrian detection system and pedestrian-vehicle communication system.Under the same road conditions,the average vehicle speed of the vehicle in the human-vehicle communication system keeps decreasing for a period of time and then shows a steady state.

关 键 词：交通安全 行人预警系统 人行横道 多智能体 交通仿真 

分 类 号：U491[交通运输工程—交通运输规划与管理]