Post-WWII street design locked suburbs into car dependency, study finds: systemic urban form drives emissions, not just distance
Original framing: “Suburban street design has driven emissions since WWII, study suggests” — Phys.org
Salazar-Miranda’s research uses spatial data science and machine learning to model how street network design (e.g., grid vs. cul-de-sac) correlates with vehicle miles traveled (VMT) and emissions. The study aligns with urban metabolism research, which shows that compact, interconnected street networks reduce energy use by enabling multimodal transport. However, it could further integrate life-cycle assessment to account for embodied emissions in infrastructure.
Salazar-Miranda’s study reveals how post-WWII street design—engineered by federal policies, oil interests, and racialized zoning—locked suburbs into car dependency, embedding emissions into the built environment.
This is not a neutral 'design flaw' but a deliberate outcome of power structures that prioritized corporate land development and racial segregation over community and climate. Indigenous urbanism, global compact-city models, and grassroots transit equity movements offer proven alternatives, yet mainstream narratives frame the problem as technical rather than political. The path forward requires retrofitting suburbs with complete streets, adopting TOD zoning, and centering marginalized voices in design—while dismantling the colonial legacies that shape today’s car-centric landscapes. The irony is stark: the cul-de-sac, sold as a symbol of freedom, is a trap of its own making, and the tools to escape it already exist in the margins of history and across cultures.