基于邻近车道车辆和多前车信息的双车道交通流动力学模型

应用跟驰理论,引入两车道优化速度的权重组合来刻画驾驶员换道趋势, 同时考虑多前车速度差信息对驾驶行为的影响,建立了两车道的微观跟驰模型. 在此基础上,基于交通流微观和宏观参量之间的关联关系,将上述跟驰模型中的微观变量转变成宏观变量, 进而建立了一个两车道宏观动力学模型.由于综合考虑了多种因素对驾驶行为的影响,该模型更符合实 际交通状况.数值模拟表明:该模型可以很好的模拟交通中的冲击波和稀疏波,且避免了特征速度大于宏观车流平均车速的缺陷.

Hydrodynamic model for two-lane traffic flow considering the information of multi-vehicles ahead and lateral vehicles

Based on car-following theory,the optimal velocity of two lanes was combined by weight to describe the lane-change intention of drivers,and then a microscopic two-lane car-following model was presented considering the effect of multiple velocity differences ahead on driving behavior.The microscopic scale parameters in the model were transformed to macroscopic scale ones based on the relevancy relation among them.Consequently,a macroscopic dynamic model of two-lane traffic flow was proposed.Taking into account the influence of multiple factors on driving behavior,the presented model is verified to be in good agreement with real traffic.The simulation shows that the presented model can reproduce shock wave and rarefaction wave,and avoid the unreasonable phenomenon in which the characteristic velocity is greater than the average velocity of traffic flow.