Prototype demonstration of a geographic information system application for seasonal analysis of traffic data : development of seasonal factors and seasonal adjustment of roadways
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Prototype demonstration of a geographic information system application for seasonal analysis of traffic data : development of seasonal factors and seasonal adjustment of roadways

  • Published Date:

    1999-08-15

  • Language:
    English
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Prototype demonstration of a geographic information system application for seasonal analysis of traffic data : development of seasonal factors and seasonal adjustment of roadways
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  • Edition:
    Final report; July 1, 1998 to June 30, 1999
  • NTL Classification:
    NTL-GEOGRAPHIC INFORMATION SYSTEMS-GEOGRAPHIC INFORMATION SYSTEMS ; NTL-REFERENCES AND DIRECTORIES-Statistics ; NTL-OPERATIONS AND TRAFFIC CONTROLS-OPERATIONS AND TRAFFIC CONTROLS ; NTL-OPERATIONS AND TRAFFIC CONTROLS-Traffic Flow ;
  • Abstract:
    The Traffic Survey Unit plans to establish a methodology in which it can assign each Portable Traffic Counter (PTC) station a seasonal group profile through a means of statistical and geographical analysis. An ArcView Geographic Information Systems application was programmed to allow the traffic survey sites to be analyzed by their spatial nature as well as by their statistical profiles. This program was created using the Avenue programming language. The program offers a user-friendly GIS interface that can aid analysts with updating the currrent seasonal groupings for traffic survey points across North Carolina. The user is able to select a site and display an attribute table listing its current seasonal assignment, its new seasonal assisgnment based on the best "best guess" as determined by the statistical analysis, and all the "best guesses" determined by that analysis. Finally, the user is able to update the new seasonal assignment based on the results of the statistical analysis and its geographical proximity to the other stations, highways, and municipalities.
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