A new car-following model: full velocity and acceleration difference model
A new car-following model: full velocity and acceleration difference model
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DOI：
10.1140/epjb/e2005-00304-3
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发表时间：
2005-09
期刊：
影响因子：
--
通讯作者：
Xiaojun Zhao;Ziyou Gao
中科院分区：
文献类型：
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作者：
Xiaojun Zhao;Ziyou Gao
通过在Jiang等（1995）的全速度差分模型（FVDM）中引入加速度差分项，提出了全速度加速度差分模型（FVADM）。该模型的主要改进在于：在紧急情况下，该模型能准确描述驾驶员的行为，不发生碰撞，也不出现不切实际的减速，而由先前的跟驰模型确定的车辆在几秒钟后发生碰撞。用数值方法研究了该模型。仿真结果表明，加速度差对交通动力学有重要影响，特别是在紧急情况下。除了紧急情况外，该模型仍然保持与FVDM相似的性质。在模型中，观察到了交通流的相变现象，得到了车头时距-速度平面内的滞回曲线。
By introducing acceleration difference terms into the full velocity difference models (FVDM) by Jiang et al. (1995), we present a full velocity and acceleration difference model (FVADM). The main improvement upon the previous models is that the FVADM can exactly describe the driver’s behavior under an urgent case, where no collision occurs and no unrealistic deceleration appears in this model, while vehicles determined by the previous car-following models collide after only few seconds. The model is investigated by numerical methods. The simulation results indicate that the acceleration difference has an important impact on the traffic dynamics, especially under urgent conditions. Besides the urgent situations, the model still remains similar properties to those of the FVDM. In the model, the phase transition of traffic flow is observed, and the hysteresis loop is obtained in the headway- velocity plane, also.