United States Department of Transportation
i
Integrated freight network model : a GIS-based platform for transportation analyses.
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2015-01-01
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[PDF-1.20 MB]
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Abstract:The models currently used to examine the behavior transportation systems are usually mode-specific. That is, they focus on a single mode (i.e. railways, highways, or waterways). The lack of
integration limits the usefulness of models to analyze the intermodal movement of freight. This
project developed a GIS-based model of the three primary surface modes as well as intermodal
connections. The resulting Integrated Freight Network Model (IFNM) accommodates highly
detailed about shipping costs, transfer costs, traffic volumes (including non-freight auto traffic),
and network interconnectivity properties. As a proof of concept, the research team conducted
an exploratory analysis that asked what the potential impact would be to Kentucky highways if
approximately half of the freight currently transported by barges on the Ohio River were shifted
onto trucks. Coal-haul roads in the northeastern and western part of Kentucky would be
particularly hard hit by a broad scale modal shift. The IFNM highlighted that roads emanating
from the Western Coalfields would experience explosive growth in freight transport, with the
proportion of trucks relative to overall traffic significantly increasing. Applying the IFNM to a
range of freight-related transportation questions could greatly enhance system efficiencies and
positively impact local economies and environments.
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