Traffic Characteristic Analysis of Two-lane Highway Under the Improved CA Model

In order to fine the traffic characteristics of the two-lane highway,we built a new two-lane CA model,which had considered the two-lane highway microscopic driver behaviors.The differences in driver behavior,car percentage and flow ratio were taken into account to investigate the parameters of traffic characteristics such as road density,average speed,traffic flow and so on.Simulation results show that the new model can reproduce some complicated traffic phenomena,such as the asymmetrically lanechanging.In addition,we got the conclusions that,first,road average speed was depended on the car ratio;second,the fluctuation came to the maximum when the car ratio was 0.7;third,the increase of adventurous drivers can increase the whole road average speed as well as the fluctuation of the traffic speed.