Research On Bus Transit Routes Network Design Theory And Implement Method

It is the common sense of all spheres that urban public transit priority is an important method to resolve urban traffic problems. Under the background of our country putting emphasis on developing transit and propose transit prioriy, the dissertation is mainly based on the research achievements of two national projects. One is Research on the Strategy and Technology of Transit Signal Priority along Bus Exclusive Lane supported by the Key Science-Technology Project of the National "Tenth Five-Year-Plan", and the other one is Urban Transportation Network Optimization and Management supported by National Natural Science Foundation Committee (NSFC), and it focuses on the critical theories and implementation technologies of Transit Routes Network Design (TRND). A series of research achievements have been fulfilled in some aspects such as TRND method architecture and procedure, transit network optimization models and solution algorithm, scale and resource of transit route optimization and computer aided design for TRND. The main contents are as follows.Firstly, the dissertation proposed an idealism transit and hubs network with perfect condition and designed two scenarios according different period and condition of transit network design demand: Scheme-Modified and Scheme-Created, whose input data and procedure are discussed in detail. Secondly, a transit routes network optimization design model was established based on minimum user travel time and unsatisfied demand. After research Initial Candidate Routes Generation and Transit Routes Optimal Choice which is related to Transit Assignment. An Improved Genetic Algorithm which imported the idea of Simulated Annealing Extending was proposed which modified Selection Operator of Genetic Algorithm and was used in Transit Routes Network Design. Then, 4 aspects optimization problem of transit network are discussed generally which are route distribution, stop layout, vehicle allocation and operation organization. Especially research focused on stop spacing optimization model based on probability distribution of trip distance for the minimum average trip time. For practice, the dissertation studied the function request, scheme design and developing method of computer aided TRND decision support system, and a prototype system Component Geographic Information System oriented was developed. Finally, the summarization of the dissertation is discussed, as the same time, the creative research achievements and other important research orientations was pointed out.The research results of the dissertation have two main significances. theoretically, it is helpful to Transit Routes Network Design, transit routes and stops layout scheme implementation at the theoretical; practically, it provides method guidance for developing computer aided TRND Decision Support System and proposed future research direction for Transit Routes Network Design Problem - Transit Routes Network Design Decision Support System.