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Synchronized Flow in a Cellular Automaton Model with Time Headway Dependent Randomization |
| CHEN Tao1 , JIA Bin1, LI Xin-Gang1, JIANG Rui2, GAO Zi-You1 |
| 1School of Traffic and Transportation, Beijing Jiaotong University, Beijing 1000442School of Engineering Science, University of Science and Technology of China, Hefei 230026 |
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| Cite this article: |
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CHEN Tao, JIA Bin, LI Xin-Gang et al 2008 Chin. Phys. Lett. 25 2795-2798 |
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Abstract We propose another possible mechanism of synchronized flow, i.e. that a time headway dependent randomization can exhibit synchronized flow. Based on this assumption, we present a new cellular automaton (CA) model for traffic flow, in which randomization effect is enhanced with the decrease of time headway. We study fundamental diagram and spatial-temporal diagrams of the model and perform microscopic analysis of time series data, which shows the model could reproduce synchronized flow as expected. It is also shown that a spontaneous transition from synchronized flow to jam could be observed by incorporating slow-to-start effect into the model. We expect that our work could contribute to the understanding of the real origin of synchronized flow.
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Received: 04 March 2008
Published: 25 July 2008
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| PACS: |
05.40.-a
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(Fluctuation phenomena, random processes, noise, and Brownian motion)
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89.40.-a
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(Transportation)
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