【摘要】 不同类型车辆构成的交通流会由于车辆差异形成不同的速度变化,尤其是在非稳定状态的交通流中表现得更明显。选取大客车、小客车、大货车、小货车和摩托车5类车型,在实验路段采集交通流数据进行交通仿真,结合车速标准差,构建在非稳定状态下交通流速度离散率模型。利用速度离散率获得由5类车型构成的非稳定状态交通流速度变化趋势,并确定不同车型对交通流速度离散率的影响程度。更多还原

【Abstract】 The traffic flow velocity changes based on the difference of vehicles types,especially it is obvious in unsteady state.Five types of vehicle are chosen in this paper,including buses,coaches,cars,heavy trucks,light trucks and motorcycles.The traffic flow data are obtained from the experiment sections for the traffic simulations.Combined with velocity standard deviation,and an under unsteady state traffic flow velocity model is built.The change trend of traffic flow velocity can be obtained through velocity discreteness ratio,and of the influence degrees for five types of vehicle can be determined for traffic flow velocity discreteness ratio.更多还原