Journal of Central South University of Technology

, Volume 16, Issue 1, pp 172–176

Bi-level programming model for reconstruction of urban branch road network

  • Feng Shi (史峰)
  • En-hou Huang (黄恩厚)
  • Qun Chen (陈群)
  • Ying-zi Wang (王英姿)
Article

Abstract

Considering the decision-making variables of the capacities of branch roads and the optimization targets of lowering the saturation of arterial roads and the reconstruction expense of branch roads, the bi-level programming model for reconstructing the branch roads was set up. The upper level model was for determining the enlarged capacities of the branch roads, and the lower level model was for calculating the flows of road sections via the user equilibrium traffic assignment method. The genetic algorithm for solving the bi-level model was designed to obtain the reconstruction capacities of the branch roads. The results show that by the bi-level model and its algorithm, the optimum scheme of urban branch roads reconstruction can be gained, which reduces the saturation of arterial roads apparently, and alleviates traffic congestion. In the data analysis the arterial saturation decreases from 1.100 to 0.996, which verifies the micro-circulation transportation’s function of urban branch road network.

Key words

branch road reconstruction bi-level programming model micro-circulation traffic 

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Copyright information

© Central South University Press and Springer-Verlag GmbH 2009

Authors and Affiliations

  • Feng Shi (史峰)
    • 1
  • En-hou Huang (黄恩厚)
    • 1
    • 2
  • Qun Chen (陈群)
    • 1
  • Ying-zi Wang (王英姿)
    • 3
  1. 1.School of Traffic and Transportation EngineeringCentral South UniversityChangshaChina
  2. 2.Planning Bureau of Nanning CityNanningChina
  3. 3.College of Civil EngineeringHunan UniversityChangshaChina

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