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Study of Optimization Method for Urban Public Transit Network

Author: KangKai
Tutor: JinWenZhou
School: South China University of Technology
Course: Transportation Planning and Management
Keywords: Public transportation network Hierarchical division Trip Assignment Line network optimization Ant Colony Algorithm
CLC: U491.17
Type: Master's thesis
Year: 2011
Downloads: 191
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Abstract

With the worsening of the problem of urban traffic, give priority to the development of the public transport system has become recognized one of the main strategies to solve the traffic problems in the city. Optimization of urban public transportation network design problem has been an important research direction in the transportation planning. How to rationalize the public transportation network, improve the efficiency of the bus system service has an important influence on the future of urban development. Therefore, the research on the public transportation network optimization problem has a very important significance. This paper first introduces the status quo of today's urban public transportation network optimization, line optimization principles and influencing factors were analyzed and summarized, and then analyzes the goal line network optimization, and constraints, as well as the optimization method. On this basis, the main results of this paper include: (1) Firstly, the analysis of the functional hierarchy of the public transportation network of bus routes, bus stops, bus stops, line level division, and based on this proposed bus lines start and end points of the selected method-level division as well as bus lines. The public transportation network hierarchical division Transit network optimization has important significance to improve the operational efficiency and service levels of bus lines. (2) The in-depth discussion bus passenger allocation method Passenger Route Choice Analysis of the impact factors, based on travel time, waiting time, congestion and other factors, the generalized cost of bus paths based on passenger travel time function, depending on the different path generalized cost flow using the SUE balanced with Fisk model assigned bus passenger. (3) In this paper, with the objective of minimizing the average travel time maximize the direct passenger density line network optimization model, select the line length, non-linear coefficient, line load factor constraints to ensure that the bus line from a global perspective network operational efficiency and service levels. Subsequently, the selection of search ability and high efficiency of ant colony algorithm Transit network optimization target eventually solved by calculating the optimal solution to meet the requirements of the line network. (4) explore optimization model based on the allocation method and the public transportation network of bus passenger, dig the intrinsic relationship between the passenger line network, through research, passenger distribution line network optimization organic combination of a combination the passenger Transit network optimization method, given the algorithm flow of the method, and the feasibility of the method is verified by an example. Transit network optimization problems mainly for bus passenger allocation model line network optimization model to expand. Insist on a combination of science and practicality in the study of ideas, in theory feasible on the basis of the emphasis on practicality, strive to better described can be applied to practical problems. Comprehensive view, this study firmly grasp the public transport network optimization problems discussed constructive suggestions of the public transportation network optimization problem.

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