The findings of this study can be summarized as the role of built environment on travel behavior is effective but as the intensity of the built environment increases, its influence on travel behavior declines, showing decreasing marginal effect of built environments. While the thresholds suggested in this paper is limited to the context of Korea, and representative to the highly dense Asian cities, such concept of the marginal effect of built environment is sure to be applicable to the western countries.
The impacts of neighborhood walkability, combining the three built environment concept, showed that such neighborhood walkability were especially effective in encouraging the travel behavior of elderly. Especially, the travel made by walk/bicycle and public transportation significantly increased as the walkability level increased.
While the research of the association between the built environment and the travel pattern has been studied for long in the western context, such studies are still active in the international settings.
Particularly, the travel behaviors of sub-populations, the elderly, are in the early stage of study. The implications of this study provide a basis for future research on the relationship between built environment and travel behaviors, especially in the study of international settings as well as sub- populations.
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