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Chin. Phys. B, 2010, Vol. 19(8): 080515    DOI: 10.1088/1674-1056/19/8/080515
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Efficiency promotion for an on-ramp system based on intelligent transportation system information

Xie Dong-Fan(谢东繁), Gao Zi-You(高自友), and Zhao Xiao-Mei(赵小梅)
School of Traffic and Transportation, Beijing Jiaotong University, Beijing 100044, China
Abstract  The effect of cars with intelligent transportation systems (ITSs) on traffic flow near an on-ramp is investigated by car-following simulations. By numerical simulations, the dependences of flux on the inflow rate are investigated for various proportions of cars with ITSs. The phase diagrams as well as the spatiotemporal diagrams are presented to show different traffic flow states on the main road and the on-ramp. The results show that the saturated flux on the main road increases and the free flow region is enlarged with the increase of the proportion of cars with ITS. Interestingly, the congested regions of the main road disappear completely when the proportion is larger than a critical value. Further investigation shows that the capacity of the on-ramp system can be promoted by 13% by using the ITS information, and the saturated flux on the on-ramp can be kept at an appropriate value by adjusting the proportion of cars with ITS.
Keywords:  traffic flow      car-following model      ITS information      on-ramp  
Received:  02 November 2009      Revised:  22 March 2010      Accepted manuscript online: 
PACS:  89.40.Bb (Land transportation)  
  02.60.Cb (Numerical simulation; solution of equations)  
Fund: Project partially supported by the National Basic Research Program of China (Grant No. 2006CB705500), the National Natural Science Foundation of China (Grant Nos. 70631001 and 70701004), and the Innovation Foundation of Science and Technology for Excellent Doctorial Candidate of Beijing Jiaotong University (Grant No. 141046522).

Cite this article: 

Xie Dong-Fan(谢东繁), Gao Zi-You(高自友), and Zhao Xiao-Mei(赵小梅) Efficiency promotion for an on-ramp system based on intelligent transportation system information 2010 Chin. Phys. B 19 080515

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