Accessibility Impacts of Transit Development Areas in Seoul

Abstract

This dissertation used multidimensional assessment methods for transit development areas associated with accessibility, land use, building density and diversity, population, socio-economic, and transit connections. The research applied a combined analysis framework using spatial network analysis for subway services, pedestrian flows, statistical approaches, and visual studies. The regional subway accessibility assessment investigated the pattern of supply for citywide subway service. The pedestrian accessibility assessment revealed the pattern of pedestrian behaviors for potential trips between a subway station and other places on foot in transit development areas. Measuring walkability helped understand how diversity, density, and design factors of station areas influence the subway user’s choices. Statistical analyses revealed the causal relationship between urban factors and transit demand in station development areas, helping planners and policymakers objectively examine the urban formation and transit users’ needs. Visualization analyses of urban forms and architectural typologies in transit development areas were also conducted as a critical component of the design research to conclude the relationship between urban form and pedestrian accessibility around station areas.