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This study investigates whether the Seoul beltway is contributing to the decline of the central city and encouraging urban sprawl, by analyzing the effects of the beltway on accessibility, urban residential development patterns, and housing rents. The simulation results show that, although Seoul's suburban beltway may contribute to raising monthly rents for the housing along the beltway catchment area, and to attracting households into the inner-ring suburbs from both the central city and the outer-ring zones, the magnitudes of these impacts are relatively minor, with $${<}$$ 1 and 0.6 % increases in total housing stock and monthly rents, respectively, for the majority of municipalities along the beltway, suggesting that the beltway has little responsibility for urban sprawl. [ABSTRACT FROM AUTHOR]

This study aims to provide empirical evidence for two traditional research questions in the field of telecommuting studies: (1) Does telecommuting promotes dispersion of urban space? (2) Does telecommuting substitute for household travel? Although these causality issues have received great deal of attention, no multivariate analysis approaches exist. Using the 2006 household travel survey data from the Seoul Metropolitan Area, this study adopts a path analysis to discover the complex relationships between telecommuting, residential/job locations, and household travel. First, the path analysis shows that rather than telecommuting serving as the determinant of location choice, job locations determine the choice to telecommute. Hence, secondary impacts of telecommuting on travel may not occur with location changes as the medium. Second, the analysis also shows that the household head's telecommuting has a positive influence on his/her non-commuting travel in both the person kilometers traveled (PKT) and vehicle kilometers traveled (VKT) models and on household members' travel in VKT models. Moreover, the VKT model suggests that the household head's non-commuting travel has a negative impact on the household members' travel. These results indicate that although telecommuting reduces commute travel, this may be offset by other travel demand within the household, owing to exhaustion of the limited travel budget. Thus, planners and policymakers must consider these impacts when evaluating the benefits and costs of telecommuting as an urban management policy. [ABSTRACT FROM AUTHOR]

This study aims to reveal the relationship between industrial agglomeration and transport accessibility in the Seoul metropolitan area. Our study suggests that in spite of the rapid expansion of the Seoul metropolitan area, central business districts still function as centers of the industry and transportation system; the agglomeration of most industrial subsectors are occurring in central areas and only primary and manufacturing sectors' clusters are located out of these areas; both of subway and road networks show higher level of accessibility in central Seoul and big cities. This implies a strong relationship between the industrial agglomeration and the transport accessibility, and such hypothetical relationship is tested for every industrial subsector using logit analysis. Our findings indicate that although there are industrial variations in the magnitude of impacts and the significance level, transport networks are, in general, positively associated with industrial agglomeration and this is especially true for service sectors. [ABSTRACT FROM AUTHOR]