Applications of TRIMM for Small and Medium Communities

This paper presents the development and working mechanisms of a custom database application called ‘Travel Related Inputs Model for MOBILE6.x,’ or TRIMM. Under the auspices of the Federal Highway Administration, TRIMM is developed for deriving vehicle activity parameters that are specific to various geographic regions across United States. The 2000 Nationwide Household Travel Survey (NHTS), and the 1990 and 1995 Nationwide Personal Travel Survey (NPTS) data form the basis for deriving inputs to the MOBILE model. The NPTS/NHTS data were reduced for reconstructing the vehicle trip chains. The reduced survey data are imbedded into TRIMM as data tables. The simplified architecture of TRIMM is based on a relational database model which performs several predefined queries on the vehicle-trip chain data tables. Application of TRIMM for air quality modeling needs of the small and medium sized communities across the United States is discussed in detail. The model feature that facilitates the users to perform data export and custom comparisons of derived vehicle activity inputs to the defaults imbedded in MOBILE 6.2 is also highlighted.


  • English

Media Info

  • Media Type: CD-ROM
  • Features: Figures; References; Tables;
  • Pagination: 15p
  • Monograph Title: Tools of the Trade: 9th National Conference on Transportation Planning for Small and Medium-Sized Communities, September 22-24, 2004, Colorado Springs, Colorado

Subject/Index Terms

Filing Info

  • Accession Number: 01043944
  • Record Type: Publication
  • Files: TRIS, TRB
  • Created Date: Mar 9 2007 1:51PM