Abstract: The integrated transport corridor of urban agglomeration is analyzed and modeled from two aspects, the decision-making department of the construction and management, and the individual corridor users. The decision-making department must consider the investment cost, ecological environment, natural resources, energy consumption, economical development, political and national defense as well as construction of the appropriate advance, with the goal to maximize the social benefits of the corridor. The individuals are concerned with the least cost in a broader sense. Considering the concerns of the two aspects, a bi-level programming model is proposed to solve the problem using the improved hybrid coding and Multi-Population Genetic (MPG) algorithm. A case study of Chang-Ji-Tu region is conducted to verify the proposed model. The optimal results are basically in accordance with the development path of these cities in the region, indicating that the proposed model has reference significance.

Key words: engineering of communication and transportation system, urban agglomeration, bi-level programming model, comprehensive transportation, corridor, layout optimization