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Who (never) makes overnight leisure trips? Disentangling structurally zero trips from usual trip generation processes

Title
Who (never) makes overnight leisure trips? Disentangling structurally zero trips from usual trip generation processes
Author
김성후
Keywords
Long-distance travel; Leisure travel; Zero-inflated model; Negative binomial model; Confirmatory latent class model; Social disadvantage
Issue Date
2021-10
Publisher
ELSEVIER
Citation
TRAVEL BEHAVIOUR AND SOCIETY, v. 25, Page. 78-91
Abstract
This study examines long-distance (overnight) travel behavior by residents of the state of Georgia. Based on a survey conducted in 2017-2018, we modeled the number of domestic leisure long-distance (LD) trips over the past 12 months by air and car modes. We posited that there are two types of zero trips - structural zeros (by people who essentially never travel LD) and incidental zeros (by people who simply happened not to have traveled LD within the past 12 months) - and used zero-inflated negative binomial models to endogenously segment people into a structural zero-trip regime versus a trip-making regime. Selected demographics, attitudes, and geographical characteristics played important roles in explaining the segmentation into regimes and the amount of long-distance travel. We present separate models by mode, and they show different sensitivities to the pertinent factors. In particular, the presence of children and distance to nearest major airport had different roles in the two models. For example, the presence of children acted as a barrier to belonging to the trip-making regime for air travel, but it was a facilitator of doing so for car travel. However, it was negatively associated with the number of trips by both modes. Not surprisingly, accessibility to airports does matter. As distance to airport increased, both entry into the trip-making regime and number of trips were inhibited for air travel, but car travel exhibited the opposite effects. In addition, it is not simply the accessibility to any nearest airport that is most relevant, but rather the accessibility to major airports, which provide more options with respect to departure times and destinations. We present and discuss the shares and profiles of cases in the structural zero, incidental zero, and non-zero groups. Finally, we suggest some avenues of future research.
URI
https://www.sciencedirect.com/science/article/pii/S2214367X21000570https://repository.hanyang.ac.kr/handle/20.500.11754/172362
ISSN
2214-367X
DOI
10.1016/j.tbs.2021.05.011
Appears in Collections:
COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > TRANSPORTATION AND LOGISTICS ENGINEERING(교통·물류공학과) > Articles
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