Climate impacts of M4 road scheme

With plans to relieve congestion on the M4 around Newport moving forward, the Wildlife Trusts Wales and others were concerned that sufficient attention had not been paid to implications for carbon emissions. To rectify this they commissioned, with funding from the Climate Change Commission Wales, Tyndall Manchester and Sustainable Change Co-operative to produce a concise report exploring the issues. We undertook a review of literature, covering areas such as how building new roads encourages greater demand and the amounts of carbon that are associated with road construction. The work made clear the very real possibility that a new road would result in increased carbon emissions, and argued that, “If the Welsh Government is to abide by its repeated climate change commitments and develop evidence-based policies informed by science it is difficult to envisage how the M4 relief road can be justified”. The full report is available here