考虑后车影响的多速度差交通流模型

A Multiple Velocity Difference Model of Traffic Flow with Following Vehicle

  • 摘要: 为了进一步提高交通流的稳定性,在多速度差模型的基础上考虑后车的影响提出一个扩展交通流模型. 本文应用线性稳定性理论方法,推导出新模型的线性稳定性条件,结果表明,相同初始条件下的交通系统,车辆的临界敏感系数值减小,增加了交通系统的稳定性. 在相同扰动条件下的数值仿真结果表明:在t=300 s时,FVD模型演化成阻塞交通流,而新模型吸收扰动速度快,达到稳定交通流状态形成自由流,说明向后观测行为能够有效地抑制交通堵塞.

     

    Abstract: Considering the influence of the following car, an extension of a multiple velocity difference model is proposed to improve the stability of traffic flow. Stability condition of the new model is obtained by using linear stability theory method. Its result shows that the critical sensitivity coefficient is reduced and the stability of traffic flow is enhanced. Simulation is carried out with identical disturbance, and the simulated results indicate that the final traffic state of FVD model is congested traffic flow after t=300 s. However, the disturbance can be absorbed quickly in the new model and traffic flow becomes free flow state.

     

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