Volume 99, Number 6, September 2012
|Number of page(s)||6|
|Section||Interdisciplinary Physics and Related Areas of Science and Technology|
|Published online||04 October 2012|
Effect of violating the traffic light rule in the Biham-Middleton-Levine traffic flow model
1 School of Transportation Engineering, Hefei University of Technology - Hefei 230009, PRC
2 Department of Modern Physics, University of Science and Technology of China - Hefei, 230026, PRC
3 School of Engineering Science, University of Science and Technology of China - Hefei, 230026, PRC
4 Complex System Research Center, University of Shanghai for Science and Technology and Shanghai Academy of System Science - Shanghai, 200093, PRC
Received: 30 March 2012
Accepted: 20 August 2012
This paper studies the effect of violating the traffic light rule in the Biham-Middleton-Levine (BML) traffic flow model. It is assumed that there are two kinds of drivers: normal drivers obey the traffic light rule and violators disobey it. Simulation results show that although the existence of violators increases the average velocity in the free-flowing phase, it decreases the threshold from free-flowing phase to jam. With the presence of violators, a new kind of configuration with stripe slopes −2 and −1/2 has been found in the free-flowing phase. We have developed an analytical investigation which successfully predicts the average velocity in the free-flowing phase. A phase separation phenomenon, where jams and freely flowing traffic coexist, has been found in the intermediate car density range. The mechanism of the phase separation has been illustrated.
PACS: 89.40.Bb – Land transportation / 45.70.Vn – Granular models of complex systems; traffic flow / 64.60.My – Metastable phases
© EPLA, 2012
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