In order to improve the transportation management, a simulation method has been developed, by which a simulation of traffic organization based on GIS could be achieved. Compared with the ordinary Macro Traffic Simulation method, in which turnings and vehicles restriction and other traffic organization elements are neglected. According to the organization of regional road network, the improved multipath restrictive capacity assignment method is used to obtain most kinds of traffic flow distribution, and a design of comprehensive restriction function, which is applied, to the simulation could take lanes, turns and vehicles restriction into consideration. Meanwhile, the coordinated database structure of GIS raises computational efficiency. Simulation module is developed by Arc Objects and VB, and a traffic-planning sample is simulated by the simulation module. The feature of simulation method makes it applicable to the management of ITS and Logistics.
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