Researam On Two Lanes Lane-Changing Traffic Flow Behavior With Look-ahead Potential

With the acceleration of urban development,traffic congestion has become a difficult problem for people to travel.In actual traffic,vehicles' moving forward and deceleration is often affected by preceding vehicles,which would have even greater impact if vehicles get closer.Therefore,in order to solve traffic congestion in expressways,this paper establishes a traffic flow model with look-ahead potential based on the linear weight of single lane,and further studies vehicles in the two-lane on the basis of the single lane model.Finally,all kinds of random traffic problems in two lanes are analyzed.The main contents of this paper are as follows:(1)Based on the cellular automata model of single lane,a traffic flow model with linear weighted look-ahead potential is established.Since the driving of vehicles should be changed according to specific environment,the deceleration probability in cellular automata model should be a change value.Thus,according to the idea of Arrhenius dynamic model,this paper provided vehicles being more closer to the driver with more weighted interaction potential by introducing the linear weighting function.Dynamic slowing probability of vehicles is obtained with the change of look-ahead potential by distinguishing different interaction potentials of different look-ahead vehicles,which is more in line with the driving behavior actually.Through numerical simulations,the fundamental diagram is obtained,benefiting the improvement of traffic jam in high density areas,which is also in accordance with actual results of traffic detection data.(2)The model based on the linearly weighted look-ahead interaction potential is extended to two lanes.According to the look-ahead interaction potential attached to vehicles,lane changing incentive is changed to the passing probability calculated by interaction potential of vehicles,so a new lane changing model of two lanes is obtained.The results show that this model has a significant improvement in the overall traffic flow while reducing the lane-changing rate,which would also help relieve traffic jam obviously.(3)Further consideration is taken into the influence of vehicles' speed and distance factors on behaviors of traffic flow in two lanes.The interaction potential function concerned with vehicles' distance and speed is put forward after considering the influence of look-ahead vehicles' speed and distance on lane-change.Finally,the traffic flow model of the two-lane look-ahead interaction potential is established,which is concerned with vehicles' speed in look-ahead distance and distance factors.Combined with the comparison of actual traffic data,the simulation results are available to lane-changing behaviors in the actual traffic.