The invention belongs to the field of intelligent traffic, and relates to a CAV speed cooperative passing method under a bottleneck road section, which comprises the following steps of: determining a car-following conflict area based on passing characteristics of vehicle groups and traffic flows in the bottleneck road section in an expressway tunnel, and performing road section division on the car-following conflict area; the influence of multiple traffic factors on the bottleneck traffic capacity is comprehensively considered, the bottleneck traffic capacity is quantified based on a safe time headway index, and modeling is carried out on the maximum bottleneck traffic capacity; the method comprises the following steps: acquiring traffic flow and collecting time headway data of a vehicle through roadside equipment, and applying a speed control value to a CAV in a speed guide road section by applying a CAV speed coordination control algorithm; and carrying out optimization design on the speed control quantity by adopting model predictive control MPC. According to the invention, aiming at the sudden bottleneck scene in the expressway tunnel, a new way is provided for relieving the continuous impact of the upstream traffic flow on the bottleneck and improving the coordination and stability of the longitudinal following driving of the traffic flow to be passed, and the vehicle passing efficiency in the following conflict area is improved.
本发明属于智能交通领域,涉及一种瓶颈路段下CAV速度协同通行的方法,包括:基于高速公路隧道内部瓶颈路段中车群以及车流的通行特征,确定跟驰冲突区,并对跟驰冲突区进行路段划分;综合考虑多交通因素对瓶颈通行能力的影响,基于安全车头时距指标量化瓶颈通行能力,并对瓶颈最大通行能力进行建模;通过路侧设备获取车流量并采集车辆车头时距数据,然后运用CAV速度协调控制算法,对速度引导路段内CAV施加速度控制值;采用模型预测控制MPC对速度控制量进行优化设计。本发明针对高速公路隧道内部出现突发瓶颈场景,为缓和上游车流对瓶颈处的持续冲击、提高待通行车流纵向跟驰行驶的协调性和稳定性提供了新途径,改善了跟驰冲突区车辆通行效率。
CAV speed cooperative passing method under bottleneck road section
一种瓶颈路段下CAV速度协同通行的方法
2024-09-10
Patent
Electronic Resource
Chinese
IPC: | G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS |
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