A DEVELOPMENT OF EXPERT SPATIAL DECISION SUPPORT SYSTEM FOR OPTIMUM ROUTE PLANNING AND ECONOMIC FEASIBILITY

The purposes of this paper are both to propose a procedure of integrating diverse models and methodologies for a route development process and to allow easy evaluation of the developed routes within an integrated Geographic Information Systems for Transportation (GIS-T) architecture. Therefore, a more normative use of GIS for transportation within a framework of expert spatial decision support system for highway planning is presented. Procedures of how GIS can be exploited for generating routes based on such data layers as slope, land use, aspect and land value, etc. are shown along with GIS's conventional role of providing descriptive data. In addition, issues and solutions for integrating a GIS with a transportation planning model are described to achieve a synergic effect in an unstructured problem setting such as investment decision making. GIS may provide network topology data, while transportation planning model outputs traffic volumes and needed statistics such as vehicle-kilometers or vehicle-time travelled, that will be used for economic feasibility analysis. Both benefits such as time and operating cost savings and costs for construction and maintenance, may be easily calculated based on GIS data. Considering many infrastructure expansion plans, especially in many developing countries, the methodology combining transportation planning models, optimum route selection procedures, GIS and the analytical procedure of economic feasibility, seems to be useful for evaluating some routes proposed in an iterative manner.

Language

  • English

Media Info

  • Features: Figures; Photos; Tables;
  • Pagination: p. 231-243

Subject/Index Terms

Filing Info

  • Accession Number: 00727026
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Oct 2 1996 12:00AM