| Urban traffic is the artery and tache of city society and economy activity, it is very important for the city's economy development and the increase of people's living standard. According to the domestic and overseas city traffic development experience, the priority development of public traffic is one of the ultimate approaches to solve the problem of Urban traffic. But, now days our country's cities in establishing the public traffic system generally facing a problem, that is largely city's foundation factor and traffic information have not been shown, and this taking a lot of difficult to city's modern management. How to make the best use of existing foundation establishment of city road, to make car and car, car and road, car and passenger each other in line, to improve public vehicle' efficiency, to provide the convenient query system for the citizen, is the problem to be solved emergency for modern public traffic development.In recent years, along with the accelerating of our country's city course, many city's scale enlarged, population increased, road extended, city's public traffic line is also increased constantly. In the city, to choose an appropriate bus to destination become a problem correlative to citizen's daily life. As a synthetically subject, Geographical Information System (GIS) in harmony with computer graph and database technology, store and manage spatial information, can combine geographic information with its attribute, based on practice require exactly output to users. Along with appliance of Object Oriented Technology and Component technology, ComGIS become a trend in GIS development. Due to the priority of exploitation mode, system function and so on, ComGIS become more and more popularity. Using ComGIS in establish city public query system, hugely convenience people's riding.The system adopt ComGIS exploitation mode. According to system function and scale, use MapObjects as component, Visual Basic.NET as the tool. This system chooses files and database to storage the system data. That is to say, spatial data is stored in Shape files and the property data is stored in relation database Microsoft Access 2003.In daily life, citizen has to know some outgoing matter as follows: destination's spatial location, the distribution of bus station around the destination, how to ride bus can conveniently and apace arrive destination. This needs the query position of city's spatial information, bus station information, bus line information and route analysis of bus exchange. Urban public traffic query system based on map, manage bus route and station, and provide citizen a method to query city's spatial information.The system realizes some basic function of GIS such as zoom in, zoom out and pan. Passenger can query bus station, bus route and place name, and can orient the result of the information. Passenger input the begin-point and end-point at will, system can search the priority outgoing route and exchange project in the condition of correspondingrestrict, and show passenger as graph. |
