Validating the Commodity Flow Survey with TRANSEARCH

TRANSEARCH is an independent, proprietary database of national freight flows that can be used to validate the findings of the Commodity Flow Survey (CFS). While TRANSEARCH does make some limited use of CFS information in its annual construction, the 2007 version was developed and completed 2 years ago, well before the most recent CFS. Consequently, the results can serve as a completely independent cross-check. TRANSEARCH has a time-proven methodology that was established over 30 years ago, and has been refined and utilized on an annual basis over this entire time span. While the overall nature of the two datasets is quite similar, portraying market-to-market freight flow volumes by mode and commodity, there are differences in scope, coverage, commodity, and modal identification that need to be accounted for in order to make accurate comparisons. Preliminary findings show that there appears to be a very high level of correlation between the two sets of freight flow volume data, with the correspondence being more pronounced at more aggregate levels of geographic market and commodity detail.

Language

  • English

Media Info

  • Media Type: Digital/other
  • Pagination: pp 47-48
  • Monograph Title: Commodity Flow Survey Workshop, November 16, 2010, Washington, D.C.
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 01354659
  • Record Type: Publication
  • Files: TRIS, TRB
  • Created Date: Oct 21 2011 11:27AM