The Government's 'Future of Mobility' and 'Road to Zero' strategies outline a second UK transport revolution, characterised by rapid decarbonisation, increased automation and enhanced connectivity. This radical transformation presents both opportunities and challenges for improving air quality over the next two decades, occurring in the context of disruptive changes in transport technology, increasing public environmental awareness and evolving transport behaviours. In this context, actions taken during the emerging transition phase will influence air pollutant sources and exposure patterns across indoor (i.e. vehicle, rail/bus) and outdoor (i.e. pavement, platform, bus station) land transport environments, with profound future implications for public health. We recognise this critical opportunity for encouraging policy foresight, cultivating scientific advancement and stimulating citizen engagement at the air quality, climate and health nexus. Our vision is to establish a diverse interdisciplinary network, connecting researchers across nine UK higher education and research institutions with >20 network partners, comprising commercial, public sector and non-profit organisations. We will establish sustainable connections to undertake co-definition of issues and opportunities and co-delivery of innovative, evidence-based solutions. We will deliver a varied portfolio of network activities including TRANSITION summits, problem-solving workshops, hackathons, discovery studies, site visits, policy engagement events and creative outreach activities at transport locations. Thus the network partners will achieve the ambitious but achievable goal of directly shaping future air quality, climate and transport policy, reflecting the ambitions of the UKRI SPF Clean Air Analysis and Solutions programme.

The latest report from the Intergovernmental Panel on Climate Change in 2018 highlighted the need for urgent, transformative change, on an unprecedented scale, if global warming is to be restricted to 1.5C. The challenge of reaching an 80% reduction in emissions by 2050 represents a huge technological, engineering, policy and societal challenge for the next 30 years. This is a huge challenge for the transport sector, which accounts for over a quarter of UK domestic greenhouse gas emissions and has a flat emissions profile over recent years. The DecarboN8 project will develop a new network of researchers, working closely with industry and government, capable of designing solutions which can be deployed rapidly and at scale. It will develop answers to questions such as: 1) How can different places be rapidly switched to electromobility for personal travel? How do decisions on the private fleet interact with the quite different decarbonisation strategies for heavy vehicles? This requires integrating understanding of the changing carbon impacts of these options with knowledge on how energy systems work and are regulated with the operational realities of transport systems and their regulatory environment; and 2) What is the right balance between infrastructure expansion, intelligent system management and demand management? Will the embodied carbon emissions of major new infrastructure offset gains from improved flows and could these be delivered in other ways through technology? If so, how quickly could this happen, what are the societal implications and how will this impact on the resilience of our systems? The answer to these questions is unlikely to the same everywhere in the UK but little attention is paid to where the answers might be different and why. Coupled with boundaries between local government areas, transport network providers (road and rail in particular) and service operators there is potential for a lack of joined up approaches and stranded investments in ineffective technologies. The DecarboN8 network is led by the eight most research intensive Universities across the North of England (Durham, Lancaster, Leeds, Liverpool, Manchester, Newcastle, Sheffield and York) who will work with local, regional and national stakeholders to create an integrated test and research environment across the North in which national and international researchers can study the decarbonisation challenge at these different scales. The DecarboN8 network is organised across four integrated research themes (carbon pathways, social acceptance and societal readiness, future transport fuels and fuelling, digitisation, demand and infrastructure). These themes form the structure for a series of twelve research workshops which will bring new research interests together to better understand the specific challenges of the transport sector and then to work together on integrating solutions. The approach will incorporate throughout an emphasis on working with real world problems in 'places' to develop knowledge which is situated in a range of contexts. £400k of research funding will be available for the development of new collaborations, particularly for early career researchers. We will distribute this in a fair, open and transparent manner to promote excellent research. The network will help develop a more integrated environment for the development, testing and rapid deployment of solutions through activities including identifying and classifying data sources, holding innovation translation events, policy discussion forums and major events to highlight the opportunities and innovations. The research will involve industry and government stakeholders and citizens throughout to ensure the research outcomes meet the ambitions of the network of accelerating the rapid decarbonisation of transport.