Flow improvement caused by agents who ignore traffic rules

Seung Ki Baek, Petter Minnhagen, Sebastian Bernhardsson, Kweon Choi, and Beom Jun Kim
Phys. Rev. E 80, 016111 – Published 15 July 2009

Abstract

A system of agents moving along a road in both directions is studied numerically within a cellular-automata formulation. An agent steps to the right with probability q or to the left with 1q when encountering other agents. Our model is restricted to two agent types, traffic-rule abiders (q=1) and traffic-rule ignorers (q=1/2), and the traffic flow, resulting from the interaction between these two types of agents, which is obtained as a function of density and relative fraction. The risk for jamming at a fixed density, when starting from a disordered situation, is smaller when every agent abides by a traffic rule than when all agents ignore the rule. Nevertheless, the absolute minimum occurs when a small fraction of ignorers are present within a majority of abiders. The characteristic features for the spatial structure of the flow pattern are obtained and discussed.

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  • Received 22 January 2009

DOI:https://doi.org/10.1103/PhysRevE.80.016111

©2009 American Physical Society

Authors & Affiliations

Seung Ki Baek1, Petter Minnhagen1, Sebastian Bernhardsson1, Kweon Choi2, and Beom Jun Kim3,4,*

  • 1Department of Physics, Umeå University, 901 87 Umeå, Sweden
  • 2Gyeonggi Science High School, Suwon 440-800, Korea
  • 3BK21 Physics Research Division and Department of Energy Science, Sungkyunkwan University, Suwon 440-746, Korea
  • 4Department of Computational Biology, School of Computer Science and Communication, Royal Institute of Technology, 100 44 Stockholm, Sweden

  • *Corresponding author; beomjun@skku.edu

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Vol. 80, Iss. 1 — July 2009

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