Integrated Local/Global Traffic Network Analysis in a GISBased System

This paper reports on our development of a GIS-based traffic network analysis system, named GIS-based transport decision support system, which provides a graphical analysis platform to transportation planners and researchers for transportation network analysis. The system has the functions of designing traffic networks on digital maps and doing traffic equilibrium analysis, as well as a novel function to integrate local detailed structures of intersections into global networks. The latter is particularly useful for the analysis of large traffic network where the detailed local network structures of some intersections have to be taken into account.