The development of the GCARS system of computer-aided highway corridor selection and its application in an environmental impact analysis in western New York State are discussed. Current versions of GCARS use an efficient minimum-path algorithm to generate route alternatives by accessing digital data bores that define engineering, socioeconomic, and environmental factors. These data bores are manipulated interactively by a companion computer system called GMAPS. The GMAPS and GCARS systems clearly show the desirability of low-cost, easy-to-operate, interactive systems for regional transportation planning studies. Graphical and statistical displays are essential, and a variety of black-and-white and color display options have been developed. Because each product has unique cost-benefit characteristics, the choice of display type must be matched to audience needs and costs of production. The use of GMAPS-GCARS in a corridor-selection study for a 160-km (100-mile) four-lane highway in western New York is described. The study shows a marked reduction in planning time at no increase in planning costs. This suggests that more widespread use of computer-aided analysis systems may result in large savings during periods of rapid inflation. (Author)

Media Info

  • Media Type: Print
  • Features: Figures; Maps; References; Tables;
  • Pagination: pp 10-16
  • Monograph Title: Application of computer and interactive graphics
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00310750
  • Record Type: Publication
  • ISBN: 0309029848
  • Files: TRIS, TRB
  • Created Date: Aug 5 1980 12:00AM