Devon County Council’s ambition to be carbon neutral by 2030 is ahead of schedule, as the council announces its next phase in cutting carbon from Devon’s roads maintenance.

Phase one, announced last year, saw the council - one of the first in the country - to develop a carbon calculator, a clever way of identifying the carbon emissions produced in every step of highway maintenance.

From the materials used; the labour involved; the distance and the type of transport used to get the materials and engineers to site; the longevity of the materials used and how long the repairs will last - that’s some of the data, crunched by the carbon calculator, that identifies the carbon emissions for that specific highway project.

Knowing all this in advance and planning it in at the early design stage of a job - building a new road or structure say, or repairs to an existing road – puts the council in the best position to cut the anticipated amount of carbon generated by the project.

It’s already led to innovative changes in the way the council and its contractors carry out highway repairs in Devon, using different materials and techniques, and recycling and re-using material as close to site as possible, for example, with significant reductions in carbon emissions.

So, if phase one is about eliminating carbon emissions at the design stage, phase two, which is being introduced in the next few weeks, is about tracking the actual carbon emitted at construction or repair stage.

Contractors have worked with the council on designing this next phase, which will ask them to share their live data on completed projects.

Take for example a stretch of road that requires re-surfacing.

The council wants contractors to report back on the quantity of work they have carried out; the materials they’ve used, eg asphalt type - the amount of that material; how it got to site; what kind of fuel was used to get it to site; how far it’s travelled; the equipment needed on site, the fuel it uses and where it’s come from; the waste created and what happens to that waste...etc.

The detail helps to build a carbon profile that tells the contractor and the council what the carbon emissions for that project have been.

Experts at the University of Exeter are working with the council, and they’ve developed an algorithm to crunch the data and create a dashboard to visualise it in a consistent way for all highways projects.

It means that the council and their contractors learn what works best, and together they can continue to cut carbon from their highway works.

Nationally, the way the council now approaches its highways work and the results it’s demonstrating in reducing carbon emissions is attracting much interest and excitement within public sector and industry.

Not only has the council been invited to speak on national platforms to local authorities and highways experts across the UK about the work it’s doing, but it’s also been working with the Future Highways Research Group, a not for profit organisation whose work is followed closely by the government.

The council, with the Future Highways Research Group and the University of Exeter, is producing guidance and standards that other local authorities can use, based on Devon’s own experiences, to identify and reduce carbon in all highways works.

Devon’s seen as one of the UK’s pioneers in this field, and is helping to develop standards that all local authorities use, based on its current business model.

That would mean a standard way of identifying carbon and eliminating it, from design stage right through to construction or repair stage, across the UK.

Councillor Stuart Hughes, the council’s Cabinet Member with responsibility for highway repairs, said: “This is a tremendously exciting period in the way we approach highway construction and maintenance. And particularly exciting that we are ahead in our thinking and commitment to cutting carbon from the work we do. My thanks to our partners at the University of Exeter, but also to our brilliant contractors for their equal commitment in improving the way we work.”

Councillor Andrea Davis, Cabinet Member responsible for the council’s actions on the climate emergency, said: “There’s no going back from this. We’re already seeing the reduction in carbon emissions from our highways team, and it’s an ambition I know is shared by our contractors. The developments we’re making in Devon are making a difference, and I’m delighted that our forward-thinking actions are being recognised nationally, and therefore potentially significant to the ways that roads across the UK are constructed and repaired.”

Dr Dan Lash, from the University of Exeter, said: “We are delighted to be working with Devon County Council to produce calculation methods to quantify the impact of road maintenance projects on the contribution to climate change. We hope that this data can collectively be used by the Council and its supply chain to make more informed choices about the most sustainable measures that can be taken.”

Nicole Turley, Milestone Infrastructure Sustainability Manager, said: “We are proud to be working in partnership with Devon County Council to address the climate emergency we all face. Milestone Infrastructure is committed to achieving a 40 per cent reduction in carbon intensity across all our operations by 2025 and are committed to making further investments and environmentally based decisions to continue the pursuit of Net Zero for the benefit of future generations.”