Briefly explain the differences in the factors considered in freight transportation planning versus passenger transportation planning.
What will be an ideal response?
The analysis underpinning freight transportation planning considers three
factors that differ from that of passenger transportation planning. First, unlike
passenger freight, some commodities are shipments that are not time sensitive,
thereby allowing the shipper’s choice of mode for those commodities to be made
solely on the basis of cost and convenience. Second, freight-movement data are
generally studied at a larger geographic scale than passenger movements, with
county-to-county or state-to-state flows commonly analyzed. Third, whereas each
passenger chooses his or her own mode and travel path, a single decision maker
makes this choice for a large number of freight parcels. While an equilibrium
network assignment for passenger travel may be defined as the assignment where
no passenger can reduce his/her travel time (which is not necessarily the lowest
system cost), a freight logistics provider may be able to consider the total system
cost, where some parcels may have a longer delivery time than others.
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