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针对Nagel-Schreckenberg模型(NaSch模型)中存在的高速车辆可能发生追尾事故的不安全性,考虑了前车速度为零的情况,提出一种新的强调驾驶安全性的一维元胞自动机交通流模型安全驾驶模型,并对该模型进行了数值模拟.由于安全概率的引入,使得系统在临界密度附近出现低速的同步相,而不是完全的堵塞相,减小了追尾事故发生的可能性,提高了高密度时道路的通行能力.模拟结果显示出了亚稳态、非平衡相变以及滞后效应等实际交通所具有的特性.
Considering the unsafe rear-end accidents of high-speed vehicles in the Nagel-Schreckenberg model (NaSch model), a new one-dimensional cellular automaton traffic safety with emphasis on driving safety Flow model safe driving model and numerical simulation of the model.As the introduction of safety probability, the system appears in the vicinity of the critical density of low-speed synchronous phase, rather than a complete block phase, reducing the possibility of rear-end accidents, Which improves the capacity of the road at high density.The simulation results show the characteristics of real traffic such as metastability, unbalanced phase transition and lag effect.