State-of-the-practice in freight data : a review of available freight data in the U.S.
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2004-02-01
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Abstract:State and regional transportation planning agencies are increasingly recognizing the need for
policies and programs addressing freight issues to ensure an efficient and reliable freight transportation
system. A major challenge, however, remains the lack of available freight data to ensure informed
decisions. State Departments of Transportation seem to (a) rely on the limited data compiled and
published by federal agencies for aggregate analysis, (b) obtain one of the private commercial sources
of data related to freight movements, or (c) collect original data. The principal commercial data source
currently is the Reebie TRANSEARCH database.
The objective of this research product is to summarize the outcome of the research team’s
comprehensive review of available U.S. freight data sources – both public and commercial sources. The
research team carefully reviewed the objectives, survey methods, assumptions, and limitations of each
publicly available database, and the available documentation of commercial databases. In total, 31
databases were reviewed. This research product documents, in detail, the characteristics of the various
databases, including sponsoring organization, performing organization, data collected, sampling method,
survey method, quality control procedure, geographical coverage, frequency of updates, and the
assumptions and limitations inherent to each data source. The contact details for the contact organization
are also provided.
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