The Research Of Public Transport Network Operation Optimization System Based On GIS

With the aggravation of urban traffic jams, the problems of difficult to travel, difficult to take a bus and difficult to find a park space take on further. It has brought flinty challenge to the sustainable development of the city. In order to solve the contradiction between the urban traffic supply and demand, step up the travel quality of urban residents and create a livable urban environment, it's a common view that we should lead our urban traffic to a way which public transport is the main part of urban traffic. Our government has proposed the idea of"Bus Priority", but the advantages of public transport didn't emerge obviously, it's due to less attractive of urban public transport and the low operational efficiency of bus enterprises. To solve these problems, we must establish the technical support system of public transport firstly, assign public transport line network reasonably, institute public transport operational plans scientifically and ensure the sustainable operation of public transport. The current layout of public transport line network and the development of operational plans are based on experience approach priority to software approach. The experience approach lacks of scientific evidence and the software approach lacks of applicable model system, so it's very important to research and develop a public transport planning system which is suitable to our traffic environment.Based on geographic information system (GIS), we realize the basic functions of GIS in application of GIS secondary development component of MapObjects. And we research and realize public transport network operation optimization system based on the platform of high-level object-oriented programming language of C#3.5, using Microsoft SQL Server 2008 to manage the property database and spatial database uniformly. The system has many functions including the input, query and maintenance of line network data, traffic zone data and operational data, line network optimization, operation optimization and network operation evaluation.This paper is based on the domestic and international actuality of public transport network operation optimization theory and the GIS applications in public transport. Firstly, we introduce the system develop technology which we should use in our system. Secondly, we analysis the functional demand and data demand of public transport network operation optimization system, design the business flow, software architecture and functional structure of the system. Thirdly, we design the system database including conceptual structure and logical structure. Fourthly, it realizes each module of the system including the module of basal operation of the map, basal data module, line network optimization module, operation optimization module and network operation evaluation module, and presents the main features of each module, the main class and the main interface of system. Finally, the paper sums up the main results of this study and looks forward to the next step of the work plan.