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Use of Volume Data to Reproduce Ramp-to-Ramp Freeway Trip Patterns - A Pilot Study


This report presents the results of a pilot study to determine the utility of developing a particular travel forecasting technique. The technique in question is a gravity-based model which requires ramp volume data as inputs. The model is used to forecast ramp-to-ramp trip tables. The preliminary study indicates that this technique is sufficiently accurate to warrant further investigation.


  • Date Published: June, 1979
  • Publication Number: WA-RD 35.1
  • Last Modified: August 1, 2007
  • Author: Nancy L. Nihan.
  • Originator: University of Washington. Dept. of Civil Engineering.
  • # of Pages: 21 p., 389 KB (PDF)
  • Subject: Estimates, Forecasting, Freeways, Gravity models, Highway transportation, Mathematical models, Pilot studies, Ramps (Interchanges), Traffic engineering, Traffic volume, Travel, Travel patterns, Urban transportation.
  • Keywords: Ramp-to-ramp trips, freeway trip tables, trip distribution, traffic volumes, travel patterns, gravity model.
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This abstract was last modified April 29, 2008