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

H. B. Zhu, H. X. Ge, L. Y. Dong and S. Q. Dai ()

The European Physical Journal B: Condensed Matter and Complex Systems, 2007, vol. 57, issue 1, 103-108

Abstract: 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. Copyright EDP Sciences/Società Italiana di Fisica/Springer-Verlag 2007

Keywords: 45.70.Vn Granular models of complex systems; traffic flow, 05.70.Ln Nonequilibrium and irreversible thermodynamics, 02.60.Cb Numerical simulation; solution of equations, 02.50.Fz Stochastic analysis, (search for similar items in EconPapers)
Date: 2007
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DOI: 10.1140/epjb/e2007-00155-x

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