摘要
为提高高速公路入口匝道区域交通安全和通行效率,提出了基于车路协同的高速公路入口匝道车辆汇入引导方法和模型.根据车路协同系统获取的各车辆实时位置和速度信息,在主线外侧车道上搜寻合适的匝道车辆汇入间隙,或通过调节主线外侧车道的车速形成合适的汇入间隙,在此基础上确定匝道车辆汇入时间、汇入位置、汇入车速等,并引导匝道车辆顺利汇入主线.利用Vissim交通仿真软件的COM接口,编程实现了车路协同环境下高速公路入口匝道车辆汇入引导功能,并针对主线和匝道流量分别处于低峰、平峰和高峰的情况进行了仿真实验.结果表明,与无车辆汇入引导情况相比,在主线交通流量处于低峰、平峰、高峰三种情况下,该方法可使入口匝道交通延误分别降低15.6%,20.9%和19.2%,并使交通冲突数分别降低17.9%,23.5%和32.3%,可有效改善高速公路入口匝道区域交通运行状况.
In order to improve the traffic safety and efficiency of freeway on-ramp area, the merging guidance method and models for on-ramp vehicle based on the Cooperative Vehicle Infrastructure Sys- tem （CVIS） are put forward. According to the vehicles- location and speed data collected by CVIS, the merging gap for on-ramp vehicle is selected from gaps on freeway near-side lane, or the merging gap was created by adjusting the speed of vehicle on near-side lane. After that, the merging time, merging point and merging speed are calculated, and the on-ramp vehicle is guided to merge into free way mainline smoothly. The merging guidanee program for freeway on-ramp vehicle based on CVIS are developed using the COM interface of Vissim, and the simulation experiments are carried out by setting the mainline and on-ramp traffic flow as low volume, medium volume and high volume, sepa- rately. Compared with the case without on-ramp vehicle, the results show that the proposed method can decrease the delay of on-ramp vehicles by 15.6%, 20.9% and 19.2% for low volume, medium volume and high volume, respectively, and decrease the traffic conflicts by 17. 9%, 23. 5% and 32.3%, respectively. The proposed method improves the traffic status of freeway on-ramp area effec- tively.
出处
《武汉理工大学学报（交通科学与工程版）》
2017年第4期537-542,共6页
Journal of Wuhan University of Technology（Transportation Science & Engineering）
基金
国家自然科学基金项目(51578432)
武汉市青年科技晨光计划项目(2016070204010124)
云南省交通厅科技计划项目(2016A05)资助
关键词
交通工程
汇入引导
入口匝道
车路协同系统
高速公路
traffic engineering
merging guidance
on-ramp
cooperative vehicle infrastructure system freeway
