Passenger Usages of the Intermodal Transportation System : An Analysis of the 2009 National Household Travel Survey Data
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2013-08-01
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Abstract:The research on intermodal transportation is vast, but most of the efforts have been on the freight side. The research on passenger intermodal transportation is much less comprehensive. It is essential to understand passenger usage of the intermodal transportation system because passengers are the biggest users of transportation systems. This research provides a first look at passenger intermodal transportation in the U.S. by using the 2009 National Household Travel Survey (NHTS) data, which provide for the first time the intermodal usages by passengers. This research provides descriptive statistics on total trips, trips by different travel modes and trip purposes, and different travel modes by trip purposes. This research further investigates the association of these intermodal transportation measures to possible factors by using Poisson and negative binomial regression models. The findings suggest that the majority of trips were made by personal vehicles, but trip purposes varied greatly. Household income and urban residency positively shaped the numbers of total trips, travel modes, and trip purposes. Homeownership, household size, and the number of household drivers also shaped these intermodal transportation measures, although the direction of the effect varied. Future research could focus on demographic variations of passenger intermodal transportation.
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