Localized defects in a cellular automaton model for traffic flow with phase separation

A. Pottmeier, R. Barlovic, W. Knospe, A. Schadschneider and M. Schreckenberg

Physica A: Statistical Mechanics and its Applications, 2002, vol. 308, issue 1, 471-482

Abstract: We study the impact of a localized defect in a cellular automaton model for traffic flow which exhibits metastable states and phase separation. The defect is implemented by locally limiting the maximal possible flow through an increase of the deceleration probability. Depending on the magnitude of the defect three phases can be identified in the system. One of these phases shows the characteristics of stop-and-go traffic which cannot be found in the model without lattice defect. Thus our results provide evidence that even in a model with strong phase separation stop-and-go traffic can occur if local defects exist. From a physical point of view the model describes the competition between two mechanisms of phase separation.

Keywords: Nagel-schreckenberg Model; Stochastic process; Cluster Formation (search for similar items in EconPapers)
Date: 2002
References: View complete reference list from CitEc
Citations: View citations in EconPapers (5)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:308:y:2002:i:1:p:471-482

DOI: 10.1016/S0378-4371(02)00547-2

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