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Chin. Phys. B, 2009, Vol. 18(9): 04037    DOI: 10.1088/1674-1056/18/9/070
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Analysis of the influence of occupation rate of public transit vehicles on mixing traffic flow in a two-lane system

Shi Pei-Jia, Zeng Qiongb, Ma Chang-Xib, Lin Fangb, Sun Pengb, Yin Xiao-Tingb, Qian Yong-Shengc
a School of Geography and Environment Science, Northwest Normal University, Lanzhou 730070, China; b School of Traffic and Transportation, Lanzhou Jiaotong University, Lanzhou 730070, China; c School of Traffic and Transportation, Lanzhou Jiaotong University, Lanzhou 730070, China;School of Geography and Environment Science, Northwest Normal University, Lanzhou 730070, China
Abstract  Based on the existing classical cellular automaton model of traffic flow, a cellular automaton traffic model with different-maximum-speed vehicles mixed on a single lane is proposed, in which public transit and harbour-shaped bus stops are taken into consideration. Parameters such as length of cellular automaton, operation speed and random slow mechanism are re-demarcated. A harbour-shaped bus stop is set up and the vehicle changing lane regulation is changed. Through computer simulation, the influence of occupation rate of public transit vehicles on mixed traffic flow and traffic capacity is analysed. The results show that a public transport system can ease urban traffic congestion but creates new jams at the same time, and that the influence of occupation rate of public transit vehicles on traffic capacity is considerable. To develop urban traffic, attention should be paid to the occupation rate of public transit vehicles and traffic development in a haphazard way should be strictly avoided.
Keywords:  capacity      average velocity      cellular automata      public transit vehicles  
Received:  27 December 2008      Revised:  23 January 2009      Published:  20 September 2009
PACS:  89.40.Bb (Land transportation)  
  05.40.-a (Fluctuation phenomena, random processes, noise, and Brownian motion)  
  45.70.Vn (Granular models of complex systems; traffic flow)  
Fund: Project supported by the Science and Technology Supporting Program of Gansu Province, China (Grant No 0804GKCA038).

Cite this article: 

Qian Yong-Sheng, Shi Pei-Ji, Zeng Qiong, Ma Chang-Xi, Lin Fang, Sun Peng, Yin Xiao-Ting Analysis of the influence of occupation rate of public transit vehicles on mixing traffic flow in a two-lane system 2009 Chin. Phys. B 18 04037

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