Citation: | YANG Linchuan, ZHU Qing. Spatially Heterogeneous Effects of Built Environment on Travel Behavior of Older Adults[J]. Journal of Southwest Jiaotong University, 2023, 58(3): 696-703. doi: 10.3969/j.issn.0258-2724.20210689 |
The implementation of the national strategy, actively addressing population aging, has underscored the importance of paying attention to the older adult population, which has become a crucial demographic group. Previous research has predominantly assumed that the effect of the built environment on the travel behavior of older adults is spatially fixed, failing to account for spatial heterogeneity. Therefore, to address this research gap, the propensity to travel, a travel behavior indicator, is analyzed using data from the 2011 Hong Kong Travel Characteristics Survey, and built-environment attributes are assessed using geo-data. A three-level random-intercept binary logistic regression model (level 1: individual, level 2: household, level 3: street block) and a geographically weighted binary logistic regression model are then developed to establish the complex relationship between the built environment and the propensity to travel of older adults, and the association is visualized with the help of ArcGIS platform. The findings demonstrate that population density, land use mix, intersection density, and streetscape greenery have a positive association with the propensity to travel of older adults, while accessibility to the metro and parks does not significantly affect this propensity. Moreover, the effects of all built-environment attributes on the propensity to travel vary across space. Specifically, the local effects of land-use mix on the propensity to travel are bi-directional: positive in the western part of the city and negative in the eastern part.
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