Given trucks' importance in moving freight, relatively little is known about their travel patternsparticularly in urban areas. Global positioning systems (GPS) used by trucking companies are a source oftruck probe data that is just starting to be utilized for a variety of applications including modeling. ThePuget Sound Regional Council (PSRC), Washington State Department of Transportation (WSDOT), andthe University of Washington (UW) have partnered on a research effort to collect and analyze GPS truckdata from commercial, in-vehicle, fleet management systems used in the central Puget Sound region.Among other uses, this GPS information, which is in essence a by-product of trucking industryoperations, is evaluated for its feasibility to supply quantitative information that will support truck andfreight models. Specifically, this paper investigates the ability to use truck GPS data to develop tripgeneration data. A case study of the grocery store industry is offered to highlight the efficacy of the tool.
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