A modified NaSch model with density-dependent randomization for traffic flow

作者：Zhu H B; Ge H X; Dong L Y; Dai S Q^*

来源：European Physical Journal B, 2007, 57(1): 103-108.

DOI：10.1140/epjb/e2007-00155-x

Based on the Nagel-Schreckenberg (NaSch) model of traffic flow, a modified cellular automaton (CA) traffic model with the density-dependent randomization (abbreviated as the DDR model) is proposed to simulate traffic flow. The fundamental diagram obtained by simulation shows the ability of this modified NaSch model to capture the essential features of traffic flow, e.g., synchronized flow, metastable state, hysteresis and phase separation at higher densities. Comparisons are made between this DDR model and the NaSch model, also between this DDR model and the VDR model. And the underlying mechanism is analyzed. All these results indicate that the presented model is reasonable and more realistic.

• 出版日期2007-5
• 单位上海大学; 宁波大学