Theoretical approach to two-dimensional traffic flow models
Author(s) -
Juan M. Molera,
Froilán C. Martínez,
José A. Cuesta,
Ricardo Brito
Publication year - 1995
Publication title -
physical review. e, statistical physics, plasmas, fluids, and related interdisciplinary topics
Language(s) - English
Resource type - Journals
eISSN - 1095-3787
pISSN - 1063-651X
DOI - 10.1103/physreve.51.175
Subject(s) - cellular automaton , statistical physics , microscopic traffic flow model , flow (mathematics) , jamming , basis (linear algebra) , phase space , partial differential equation , traffic flow (computer networking) , computer science , phase transition , boltzmann equation , automaton , space (punctuation) , physics , mathematics , mechanics , mathematical analysis , theoretical computer science , algorithm , geometry , computer network , computer security , quantum mechanics , traffic generation model , thermodynamics , operating system
In this paper we present a theoretical analysis of a recently proposedtwo-dimensional Cellular Automata model for traffic flow in cities with thenovel ingredient of turning capability. Numerical simulations of this modelshow that there is a transition between a freely moving phase with highvelocity to a jammed state with low velocity. We study the dynamics of such amodel starting with the microscopic evolution equation, which will serve as abasis for further analysis. It is shown that a kinetic approach, based on theBoltzmann assumption, is able to provide a reasonably good description of thejamming transition. We further introduce a space-time continuousphenomenological model leading to a couple of partial differential equationswhose preliminary results agree rather well with the numerical simulations.Comment: 15 pages, REVTeX 3.0, 7 uuencoded figures upon request to cuesta@ing.uc3m.e
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