考虑前方交通状态的交通流格子模型与数值模拟

Lattice model of traffic flow and numerical simulation with the consideration of front traffic situation

考虑前方交通状态对驾驶行为的影响,提出了新的交通流格子模型.通过线性稳定性和非线性分析,获得了改进模型的中性稳定性条件和mKdv方程密度波解.理论分析和数值模拟表明,驾驶员通过关注前方交通状态,选择平稳的驾驶行为,减少不必要的加减速行为,保证车辆的平稳运行,从而进一步改善交通,增强交通流的稳定性.

A new lattice model of traffic flow is proposed by considering the effect of front traffic situa-tion on driving behaviors.The neutral stability condition and the solution of the mKdV equation are ob-tained by the linear stability analysis and nonlinear analysis for the improved model.Theoretic analysis and numerical simulation show that the driver will choose his/her smooth driving behaviors to decrease the unnecessary acceleration and deceleration behaviors and guarantee the car run steadily,which will further improve the traffic and strengthen the stability of traffic flow.