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Disorder structure of free-flow and global jams in the extended BML model |
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| Authors: | Xiao-mei Zhao Dong-fan Xie Bin Jia Rui JiangZi-you Gao |
| Institution: | a School of Traffic and Transportation, Beijing Jiaotong University, Beijing 100044, China b MOE Key Laboratory for Urban Transportation Complex Systems Theory and Technology, Beijing Jiaotong University, Beijing 100044, China c School of Engineering Science, Univ. of Science and Technology of China, Hefei 230026, China |
| Abstract: | The original BML model is extended by introducing extended sites, which can hold several vehicles at each time-step. Unexpectedly, the flow in the extended model sharply transits from free-flow to global jams, but the transition is not one-order in original BML model. And congestion in the extended model appears more easily. This can ascribe to the mixture of vehicles from different directions in one site, leading to the drop-off of the capacity of the site. Furthermore, the typical configuration of free flowing and global jams in the extended models is disorder, different from the regular structure in the original model. |
| Keywords: | Traffic flow Phase transition Disorder structure |
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