Abstract: In order to solve the traffic congestion located at expressway on-ramp during peak periods, based on intelligent internet connection for collaborative merging control and the thought of virtual platoon, an improved collaborative merging model was constructed, which could simultaneously reflect vehicle collaborative merging and collaborative lane-changing. With the simulation platform constructed by Python and VISSIM, the effectiveness of the proposed model was evaluated by selecting indicators such as road network traffic efficiency, on-ramp queue length, and designated distance travel time. A comparative analysis was conducted on the improvement effect of road network traffic efficiency in scenarios where there was no control, collaborative merging control and improved collaborative merging control of virtual platoon. The results reveal that compared with no control, under the control of the improved collaborative merging and collaborative merging control of virtual platoon, the average delay of the road network is reduced by 65.3% and 59.0% respectively, and the traffic efficiency of the entrance area is also improved. Meanwhile, both types of control can reduce the travel time of vehicles during peak hours, while the improved collaborative merging control of virtual platoon has better traffic efficiency.

Key words: traffic engineering, intelligent internet connection, virtual platoon, cooperative merging, traffic efficiency

摘要： 为解决城市快速路入口匝道在高峰时段引起的交通拥堵问题，基于智联网技术的协同合流控制及虚拟车队思想，构建了能同时反映车辆协同合流及协同换道的改进协同合流模型；依据Python和VISSIM搭建了仿真平台，选取路网通行效率、入口匝道排队长度和指定距离的行程时间等指标对改进协同合流模型的有效性进行了评价；对比分析了无控制、虚拟车队协同合流控制及虚拟车队改进协同合流控制3个场景下路网通行效率的提升效果。结果表明：与无控制相比，虚拟车队改进协同合流控制及虚拟车队协同合流控制场景下，路网平均延误分别降低了65.3%和59.0%，入口区域的通行效率均得到提高，两种控制均能减少高峰期车辆行程时间，而虚拟车队改进协同合流控制的路网通行效率更好。

关键词: 交通工程, 智能网联, 虚拟车队, 协同合流, 通行效率