拥挤交通流的行为分析与仿真建模

从分析拥挤状况的交通行为特性出发，建立了相应的仿真模型。该模型在跟车子模型加入了随机扰动项，换道子模型的可行性检测中加入了前后间距不足时司机的减速行为。与传统模型相比该模型能更好地反映拥挤流下的交通行为，更适合于拥挤状况的交通微观仿真。

Behavior Analysis and Simulation Modeling of Congested Traffic Flow

Traffic is a complicated system which is made of persons,vehicles and roads.Especially,the vehicles' interactions are more complicated under congested traffic flow.Aimed to the deficiency of neglecting the analysis of congested traffic(flow) in the existing microscopic traffic simulation,this paper starts with analyzing the traffic behavior characteristics of(congested) traffic flow,then,presents a microscopic simulation model under congested conditions.In the car-following(sub-model) of the proposed model,it adds a random error component of the acceleration.In the lane-changing(sub-model,) it adds the decelerating behavior when the lead or lag gap is not enough.Compared with the conventional models,the(proposed) model can reflect the characteristics of traffic behavior under congested traffic conditions more effectively,and can be more appropriate for microscopic simulation under congested traffic conditions.