Abstract
The purpose of this paper is to combine a traditional transportation planning model with a geographic information system (GIS) and an expert system (ES) in order to demonstrate the feasibility of integrating a transportation planning model with GIS and ES technology. Hence an interactive desktop transportation planning system called TranDASS was developed. By combining the three systems, it is hoped that the inherent problems of transportation planning models, such as user-unfriendliness, labor-intensiveness, and theoretical limitations, can be alleviated. Yet combining GIS with a traditional transportation planning model always means that one has to overcome the topological incompatibility between the two. Therefore, a FORTRAN-based topology conversion algorithm is developed that establishes a communication channel between them. The expert system facilitates the generation of input to the transportation planning model by providing a user-friendly interface. Using an expert system, even in this limited sense, sheds light on how to resolve judgmental issues in the transportation planning process.
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