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The UK Climate Change Act 2008 commits to a reduction of 80% in national GHG emissions by 2050 compared to 1990 levels. This article explores what happens next where these top-level aspirations are expected to be turned into radical action. It does so through examination of the transport sector, which is a highly complex, fragmented, and multi-level delivery environment. The research draws on cases studies of four major cities with different governance structures within the two distinct, yet connected, national contexts of England and Scotland. It integrates a range of theoretical legacies, namely �muddling through�, multi-level governance, and positional analysis, to look across governmental layers and out to non-governmental actors at all levels. Underneath the 80% target, the framework for action remains unclear. Lower-tiered authorities report difficulties in acting in a more comprehensive or rapid manner than upper tiers of government, largely because of the potential costs involved and a significant resource dependency on national governments. Ambition is also tempered by conflicts with economic growth objectives and the difficulties in aligning the objectives of the myriad of public and private organizations that need to take action.
Policy relevance The transport sector is seen to be a difficult sector in which to achieve early cuts in carbon emissions. Understanding how to mobilize the many public- and private-sector actors in the transport sector is a key challenge to be addressed in many developed countries. This article provides practical insights from real decision makers about the difficulties that a slow incremental strategy creates. Whilst it builds flexibility into future decision making, it also leads to short-termism and generates uncertainty about investment and policy choices. This allows carbon policy to be crowded out by other agendas, most notably economic growth. Whilst there are aspirations for green growth strategies that grow jobs and substantially cut carbon, these remain elusive in the transport sector, with major new infrastructure often stimulating more carbon consumption. A clearer framework for carbon management is necessary if sound long-term mitigation policies are to be put in place.
