New metro lines in Vietnam: transit-oriented development or elite-oriented enclaves? A synthesis of thematic analysis and the push-pull-mooring framework

As Vietnam's metropolitan centers transition toward rail-based urbanism, a distinct socio-spatial phenomenon - the emergence of the “Metro Elite”- is reshaping the urban hierarchy. This study evaluates whether new metro corridors in Hanoi and Ho Chi Minh City foster inclusive Transit-Oriented Development (TOD) or facilitate the formation of elite-oriented enclaves. To address this, the research investigates three critical dimensions: the economic accessibility of TOD housing for average citizens, the socio-economic profiles of current residents, and the balance between functional benefits and social costs. The study employs a multi-stage methodology. Initially, thematic analysis was applied to data from 64 semi-structured in-depth interviews with residents along major metro lines to extract core themes. These themes were subsequently synthesized through the Push-Pull-Mooring (PPM) framework to establish a causal model of residential relocation. Findings reveal a significant affordability gap, indicating that nascent property developments are largely inaccessible to the average income earner, primarily serving a “Metro Elite” driven by temporal sovereignty (pull factor) and institutional trust (mooring factor). Crucially, the analysis suggests that the tangible benefits of enhanced accessibility are currently being offset by the social costs of socio-spatial decoupling and the erosion of traditional community structures. The study concludes that without robust inclusionary zoning and equity-led planning, Vietnam's metro lines risk formalizing a geography of exclusion. This research provides a vital critique of market-led TOD and demonstrates the effectiveness of integrating thematic analysis with the PPM framework to understand complex urban transitions.