Gis-based Urban Transport Planning, Computer-aided Decision Support System

Geographical Information System(GIS) is the combination to deposit and process the information relating to distribution of geography space. During the process of Traffic Planning, with the help of GIS on the computer, we can found, compile, manifest and manage the urban transportation information, and analysis the linear geographical net in a space way, and provide the information to the user in a direct, clear-cut, and all-inclusive way.The main content of studying in this paper includes: According to the operation principle of GIS, developed DSS of city traffic planning of practicability. Structure the topological structure chart of city traffic network, deal with the traffic network, can solve shortest path and strongly connected problem, and can plan result express by way of figure, can reduce work load and time greatly, and can make traffic planning visual in more image.