Travel demand analyses are useful for transportation planning and policy development in a study area. However, travel demand modeling faces two obstacles. First, traditional techniques require sequential modeling of the four travel components (trip generation, trip distribution, modal split and network assignment). This can result in inconsistencies and non-convergence. Second, the data required are often complex and difficult to manage. Recent advances in formal methods for travel demand analyses and computational platforms for spatial data handling can overcome these obstacles. This paper reports on the development of a geographic information system (GIS)-based simultaneous transportation equilibrium model (STEM). The model generates a transportation equilibrium corresponding to the simultaneous and consistent solution of the four travel demand components. A sophisticated GIS design provides a flexible, efficient and portable platform for the STEM and the complex multimodal network and demand data. The authors also discuss possible design enhancements that would facilitate wider application of the GIS-STEM.


  • English

Media Info

  • Features: Figures; References; Tables;
  • Pagination: p. 41-79

Subject/Index Terms

Filing Info

  • Accession Number: 00727015
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Oct 1 1996 12:00AM