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运用具有内、外环车道的平面环形交叉路口元胞自动机模型,对开放边界条件下平面环行交叉路口的交通流进行研究.计算机模拟结果表明:边界条件和道路瓶颈影响着平面环形交叉路口交通流的性质,产生概率和消失概率均只在一定范围内影响系统流量的变化.根据系统流量与产生概率和消失概率的关系,将系统分为三个相区,并对相图进行研究,为实际交通控制提供参考.
The traffic flow of a plane circular intersection under open boundary conditions is studied by using the cellular automaton model of a plane circular intersection with inner and outer ring lanes.Computer simulation results show that the boundary conditions and bottlenecks affect the traffic at the plane roundabout The properties of flow, the probability of occurrence and the probability of disappearance all affect the change of system flow only within a certain range.According to the relationship between system flow and generation probability and disappearance probability, the system is divided into three phase regions, and the phase diagram is studied as Actual traffic control provide a reference.