Study and application of construction GIS-T method for urban regional traffic network

Construction of urban regional traffic network is the base of regional transportation planningt,he regional traffic network has a wide range of datai,ts storage,display,and management process is very complicated.The GIS-T contribute to establish clear,visualized structure of layer for traffic network which has strong maneuverability.The construction method of regional traffic network based on GIS-T is discussed,which based on the regional case of Changsha Yanghuyuani,trealizes the visualization of regional network editing and processing of attribute data by integrating vectorial graph and database,visual inputting,modifying network-data and optimization of project are realized on the basis of TransCAD simulation platform.The information of network can be updated in timet,he accurate and complete testdata can be offered for the planning and design of regional transportation network by means of GIS-T.