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Chin. Phys. B, 2012, Vol. 21(4): 040506    DOI: 10.1088/1674-1056/21/4/040506
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Characteristics of synchronized traffic in mixed traffic flow

Ning Hong-Xin(宁宏新)a) and Xue Yu(薛郁)a)b)
a. Institute of Physics Science and Engineering, Guangxi University, Nanning 530004, China;
b. Shanghai Institute of Applied Mathematics and Mechanics, Shanghai University, Shanghai 200072, China
Abstract  In this paper, the characteristics of synchronized traffic in mixed traffic flow are investigated based on the braking light model. By introducing the energy dissipation and the distribution of slowdown vehicles, the effects of the maximum velocity, the mixing ratio, and the length of vehicles on the synchronized flow are discussed. It is found that the maximum velocity plays a great role in the synchronized flow in mixed traffic. The energy dissipation and the distribution of slowdown vehicles in the synchronized flow region are greatly different from those in free flow and a traffic jamming region. When all of vehicles have the same maximum velocity with Vmax > 15, the mixed traffic significantly displays synchronized flow, which has been demonstrated by the relation between flow rate and occupancy and estimation of the cross-correlation function. Moreover, the energy dissipation in the synchronized flow region does not increase with occupancy. The distribution of slowdown vehicles shows a changeless platform in the synchronized flow region. This is an interesting phenomenon. It helps to deeply understand the synchronized flow and greatly reduce the energy dissipation of traffic flow.
Keywords:  cellular automata      synchronized flow      mixed traffic flow      energy dissipation  
Received:  03 July 2011      Revised:  04 October 2011      Accepted manuscript online: 
PACS:  05.70.Fh (Phase transitions: general studies)  
  89.40.-a (Transportation)  
  05.90.+m (Other topics in statistical physics, thermodynamics, and nonlinear dynamical systems)  
Fund: Project supported by the National Natural Science Foundation of China(Grant Nos.10865001 and 11047003),the National BasicResearch Program of China(Grant No.2006CB705500),and the Graduate Student Innovative Foundation of Guangxi ZhuangAutonomous Region,China(Grant No.105930903077)
Corresponding Authors:  Xue Yu, E-mail:yuxuegxu@gxu.edu.cn     E-mail:  yuxuegxu@gxu.edu.cn

Cite this article: 

Ning Hong-Xin(宁宏新) and Xue Yu(薛郁) Characteristics of synchronized traffic in mixed traffic flow 2012 Chin. Phys. B 21 040506

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