Lessons for Sustainable TOD by Japanese Private Railways

A Case Study of Tama Den-en-Toshi

抄録

This paper examines the sustainability challenges of the transit-oriented development (TOD) in suburban Tokyo, focusing on Tokyu Corporation's Tama Den-en-Toshi area. By tracing the historical evolution and urban planning theories that shaped this area, particularly the "Green Peas" structure, the paper highlights the balance between urban expansion and green-space preservation. Tama Plaza, a key district within this development, is explored as a case study to illustrate successes and ongoing challenges faced by the suburban TOD.

The paper also addresses the significant impact of the COVID-19 pandemic on urban living and commuting patterns in the Tokyo Metropolitan Area. As the shift toward remote work continues, it is crucial to reassess the role of suburban TODs, when the demand for local infrastructure, community spaces, and digital-technology integration is increasing. This changing dynamic offers both opportunities and challenges for areas like Tama Plaza, which must adapt to serve both residential life and evolving workspaces.

Finally, the paper offers policy recommendations for sustainable development in suburban areas by addressing aging populations, declining community cohesion, and economic pressures. The conclusions emphasize the importance of integrating digital technologies and revising land-use policies to ensure that TOD remains resilient and responsive to current and future residents’ needs.