In the context of net zero targets, the Bloomington School raises vital questions for public administration about the suitability and inter-relationships between different scales of governance for addressing this complex challenge. The extant empirically orientated literature exploring different examples of polycentric climate governance can gain from a closer focus on Elinor Ostrom’s conjecture that large scale externality problems can be most effectively addressed through decentralised governance processes. There is significant need and scope for applying Ostrom’s Institutional Analysis and Development (IAD) framework to urban governance contexts. This paper applies the IAD framework to a case study of urban governance in London, focusing on sustainable transport targets and the task of delivering active travel infrastructure. The case confirms the pertinence of Bloomington insights into the importance of local knowledge and collaborative and entrepreneurial approaches to governance. The study also demonstrates that the Bloomington case for decentralised processes of institutional adaptation needs to be qualified where externalities cut across multiple jurisdictions, and in the case of reducing CO2 emissions are global in scale. Enabling active travel is found to require national and city-level governance initiating policy coordination across multiple local jurisdictions.
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