Geographic Information Systems (GIS) are used in a number of transport-related areas, such as route and capacity planning, network analysis and route selection. One of the difficulties faced to date has been that while the input side of GIS, the data collection and preparation, has been tackled effectively, the potential value of the systems have not always been achieved because the outputs are seen as "pretty computer maps". One area where GIS can play an increasingly valuable role is in providing a solid basis for a range of decision making process which depend on geographical and other spatial issues. A particularly exciting area is the ability to link existing analytical methods such as decision analysis into the spatial world presented through a GIS. This paper presents ideas on how different issues (eg demographics, environment) can be incorporated into a decision-support GIS and shows the detail of how decision analysis techniques such as weighting and scoring can provide new means of assessing risks involved in such decisions as route selection and also evaluating the optimum outcome. It also shows how this kind of system can provide an "audit" to show how a decision is reached and also how more commonly seen benefits of GIS such as good presentation and use of multimedia techniques will be strengthened by use of proper evaluation models. (A) For the covering abstract see IRRD 866258.


  • English

Media Info

  • Pagination: p. 117-28

Subject/Index Terms

Filing Info

  • Accession Number: 00668669
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • ISBN: 0-86050-259-7
  • Files: ITRD, ATRI
  • Created Date: Nov 16 1994 12:00AM