中国物理B ›› 2010, Vol. 19 ›› Issue (5): 50517-050517.doi: 10.1088/1674-1056/19/5/050517

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Effects of the number of on-rampson the ring traffic flow

尚华艳1, 黄海军2, 唐铁桥3   

  1. (1)Institute of Transportation Engineering, Tsinghua University, Beijing 100084, China; (2)School of Economics and Management, Beijing University of Aeronautics and Astronautics, Beijing 100191, China; (3)School of Transportation Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China;School of Economics and Management, Beijing University of Aeronautics and Astronautics, Beijing 100191, China
  • 收稿日期:2009-09-21 修回日期:2009-09-27 出版日期:2010-05-15 发布日期:2010-05-15
  • 基金资助:
    Project supported by the Program for New Century Excellent Talents in University, China (Grant No.~NCET-08-0038), the National Natural Science Foundation of China (Grant Nos.~70701002, 70971007 and 70521001), and the National Basic Research Program of China (Grant No.~2006CB705503).

Effects of the number of on-rampson the ring traffic flow

Tang Tie-Qiao(唐铁桥)a)b)†, Huang Hai-Jun(黄海军)b), and Shang Hua-Yan(尚华艳) c)   

  1. a School of Transportation Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China; b School of Economics and Management, Beijing University of Aeronautics and Astronautics, Beijing 100191, China; c Institute of Transportation Engineering, Tsinghua University, Beijing 100084, China
  • Received:2009-09-21 Revised:2009-09-27 Online:2010-05-15 Published:2010-05-15
  • Supported by:
    Project supported by the Program for New Century Excellent Talents in University, China (Grant No.~NCET-08-0038), the National Natural Science Foundation of China (Grant Nos.~70701002, 70971007 and 70521001), and the National Basic Research Program of China (Grant No.~2006CB705503).

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摘要： Since ramp is an important composition of traffic system and there often exist multi ramps in a traffic system, the number of ramps can have great effects on main road traffic and produce some complex phenomena. In this paper, we employ the model presented by Tang \textit{et al}. [2009 {\em Communications in Theoretical Physics} {\bf 51}({1}) 71] to further study the effects of the number of on-ramps on the stability of traffic flow on a ring road. The numerical results show that this model can reproduce some complex traffic phenomena resulting from multi on-ramps on the ring road and the effects of the number of on-ramps on traffic flow, but the phenomena and the effects are both related to the initial density of the main road.

Abstract: Since ramp is an important composition of traffic system and there often exist multi ramps in a traffic system, the number of ramps can have great effects on main road traffic and produce some complex phenomena. In this paper, we employ the model presented by Tang et al. [2009 Communications in Theoretical Physics  51 (1) 71] to further study the effects of the number of on-ramps on the stability of traffic flow on a ring road. The numerical results show that this model can reproduce some complex traffic phenomena resulting from multi on-ramps on the ring road and the effects of the number of on-ramps on traffic flow, but the phenomena and the effects are both related to the initial density of the main road.

Key words: traffic flow, on-ramp, stability

中图分类号:  (Land transportation)

  • 89.40.Bb
02.60.-x (Numerical approximation and analysis)