In 1991, one of the most important pieces of legislation in history was signed into law. The Intermodal Surface Transportation Efficiency Act (ISTEA) requires traffic monitoring and systems management monitoring of pavement, bridges, safety, congestion, public transportation facilities, and intermodal facilities. These systems call for coordinated efforts to collect, manage, analyze and store transportation related data. With these new requirements come opportunities to use existing technologies and resources to develop state of the art information storage, retrieval and management processes. GIS-T (geographic information systems for transportation) is one of the tools that will be used extensively in upcoming years to manage the information requirements of ISTEA. More specifically, GIS coupled with an integrated server-client based information system will become the standard, replacing many existing stand-alone, subgroup level applications that do not reflect the overall goals and objectives of an organization. This report discusses two current model architectures proposed and developed for GIS-T applications (several other models are discussed in less detail). The first model discusses a four tier architecture integrating data, activities, information technology and people into one integrated information system. The second model delves into more detail by discussing 15 different integrated servers combined into one GIS-T server-client architecture. These two models provide a first iteration of GIS-T applications. This report discusses a second iteration framework combining both of the above architectures to be used by departments of transportation (DOTs) and metropolitan planning organizations (MPOs). This framework combines the ISTEA management systems with attribute data, spatial data, transportation models, transportation analysis tools, procedures and people into one integrated server-client framework. Finally, a real-world application developed in one of the DOT districts in Florida using concepts of the enhanced framework is discussed. This system seamlessly integrates an ArcView GIS application with a knowledge based expert system programmed in Visual Basic.


  • English

Media Info

  • Pagination: 9p

Subject/Index Terms

Filing Info

  • Accession Number: 00789777
  • Record Type: Publication
  • Files: NTL, TRIS, TRB
  • Created Date: Mar 14 2000 12:00AM