信号交叉口混合交通冲突研究

Research on mixed traffic conflict at signalized intersection

为定量分析交叉口混合交通冲突问题,基于微观模型分析,建立有关交通参与者(机动车,自行车和行人)在交叉口处发生的混合交通冲突的3个模型。依托对不同交通参与者在交叉口的交通流线研究,分析得出机动车、非机动车和行人间的主要冲突类别;结合交通参与者的位置、速度、加速度等参数,定量判定交叉口混合交通冲突。最后,将模型应用于北京市海淀区八角东街与时代花园北路的交叉口交通冲突分析中。结果表明,当交通参与者间的距离小于临界冲突半径时,可判定为发生冲突,反之,则判定为没有冲突。模型判定结果与实际情况基本一致。

To make quantitative analysis for the mixed traffic conflict problem, 3 models were built for mixed traffic conflicts between participants in traffic at signalized intersections by using the method of microscopic model analyzing. Traffic flows of different moving participants in traffic were taken into account in the research on mixed traffic conflict to analyze the conflict types of motor vehicles, non-motor vehicles and pedestrians. The location, speed, acceleration and other parameters of the moving participants were taken into account in the models. Finally, the models were applied to the intersection between Haidian District Bajiao East Street and Era Garden North Road.The results of the study demonstrate that the mixed traffic conflict models conform with the actual situation.