Circular Economy Transport: Strategies For Sustainable Mobility

Who should read this guide (and what you’ll learn)

This guide is designed for public transport operators, infrastructure contractors, sustainability managers, commercial directors and policy leaders working in, or supplying to, the UK, Ireland, EU, and MENA transport sectors. It provides an essential reference for those preparing bids, managing procurement, or leading sustainable mobility strategies. Here, decision makers will gain:

• Practical approaches to embed the circular economy in public transport
• Strategies to meet rising transport tender sustainability requirements
• Commercial insights to ensure environmental compliance in bids
• Frameworks and success stories demonstrating how circular economy transport creates commercial advantage

The challenge for modern public transport organisations is more than technical—it’s commercial. Failing to integrate circular economy transport risks losing market position, failing tenders, and incurring long-term operational penalties. This guide will help readers cut through complexity, avoid costly missteps and secure long-term competitiveness by adopting proven sustainable mobility strategies. Insights reflect Surbon Consulting’s expertise with winning, delivering, and advising on public transport bids for clients across the UK and the Middle East.

Rethinking mobility: why circular economy is redefining transport

The shift from linear consumption to circular mobility is now business-critical. Traditional models—based on take, make, dispose—produce resource waste, carbon emissions, and inefficiency, driving up costs and regulatory risks. With mobility-as-a-service (MaaS), modal integration, and digital platforms all transforming how journeys are delivered and experienced, the pressure to maximise urban resource efficiency and accelerate transport decarbonisation is mounting. Leading operators and public authorities are pivoting to shared mobility systems that dramatically reduce environmental impact and total cost.

Why public transport is the backbone of a circular society

Public transport modes—rail, metro, bus, ferry—are low carbon and are foundational to urban circularity. High mass transit efficiency allows assets to be used intensively, with shared infrastructure reducing duplication and enabling modal shift away from private car dependence. Evidence from UITP  and proven through many operators e.g.  shows a direct link between public transport use, reduced city emissions, and improved urban sustainability. Robust public transport unlocks compact growth, less congestion, and more liveable cities.

From take–make–dispose to circular thinking: a transport perspective

Transitioning from linear vs circular models means operationalising a lifecycle approach in transport. This covers design for disassembly, sourcing for longevity, and active strategies for reuse and remanufacturing—critical in cost-focused fleet operations and rail rolling stock. Increasingly, new contracts and regulations now incentivise end-of-life vehicle management, as pioneered by Irish Rail’s 100% recyclable DART+ fleet, which decreases embedded carbon and reduces procurement risk.

Global urgency: climate goals, resource pressures, and the case for change

Under the Paris Agreement transport targets, all signatories including EU and UK cities must accelerate decarbonisation, with 2050 being the year where net zero greenhouse gas emissions should be reached to meet the 1.5°C target.

However, growing resource scarcity, volatile supply chains, and mounting greenhouse gas emissions in transport have pushed the issue to the boardroom. Failure to address global warming potential (GWP) exposes operators and contractors to financial penalties and competitive exclusion. Integrating circular practices enhances climate resilience in mobility, safeguarding value for commercial, state and investor stakeholders.  

It is also expected that this issue will be regulated with EU Circular Economy Act expected to be introduced in 2026 and UK’s Circular Economy taskforce presenting their initial report in autumn 2025. 

The cost of linear transport models (and why change is inevitable)

Legacy models generate unsustainable transport waste streams, rebuilds, and higher infrastructure obsolescence, raising costs even further. Long-term, this increases both public subsidy demand and business risk. Public transport systems that depend on new builds, fuel dependency, and single-use components consistently report rising total cost of ownership (TCO) versus regions actively implementing circular models.

Rising environmental and economic pressures on traditional transport

Public transport operators face escalating GHG emissions regulations, volatile fuel prices, and pressure from urban congestion. Studies show a move to circular maintenance and asset reuse strategies has reduced renewals and repairs by over 25% in Oslo and Amsterdam since 2020 [1,2].

Why current resource flows in public transport are unsustainable

Across Europe and the Middle East, excessive material throughput, high vehicle turnover rates, and embedded carbon are characteristic of linear procurement. Energy inefficiency is magnified by continued reliance on non-renewable resource use. This is now being changed by government procurement which asks the private sector to include reference to public transport an example of which is Ireland’s Green Public Transport Fund, which favours circular procurement and refurbishment projects.

Core principles of circular economy in transport and mobility

Implementing the circular economy in public transport requires commitment to:

• Design out waste at every project and asset stage (from modular vehicle design and eco-design principles to station retrofits).
• Establishing reuse and recycling loops to cut material spend and risk, underpinned by data-driven service lifecycle management.
• Moving to product-as-a-service models—see Irish Rail’s leasing approach to rolling stock and Bus Éireann’s refurbished regional bus pilots.
• Enabling sustainable profitability through circular business models.
• Applying system-level thinking in decision making and tendering, ensuring procurement and build operate as an integrated ecosystem.

Designing out waste: vehicles, stations, and services

A move to asset modularity and adaptive reuse reduces life extension costs and boosts contract value. Best-in-class practices include Ruter’s Oslo bus stations (modular, upgradable) and Luas’ Dublin light rail station upgrades based on eco-design principles, yielding “waste-free operations” and longer station usability. The challenge is to extend this thinking to all aspects of public transport operations.

Keeping materials and resources in continuous use

Increasingly public transport operators and authorities are moving to digital asset tracking systems, remanufacturing, and closed-loop supply chains to ensure component and vehicle turnover is reduced year-on-year. This not only supports environmental goals but boosts commercial outcomes through significant warranty savings and lower material spend.

Regenerating cities and natural systems through circular mobility

Urban greening, use of green infrastructure in depot and corridor design, and biophilic transport design (e.g., Norway’s ‘green tracks’ for trams) deliver direct city benefit (photo). In Dublin, BusConnects’ infrastructure integrates urban biodiversity, stormwater management, and nature-optimised station materials, enhancing climate and commercial resilience while in TfL bee friendly bus stops have been suggested.

Examples of how cities are leading circular public transport

Successful urban circular economy pilots and city-led sustainability initiatives demonstrate that transformation is possible and commercially beneficial.

Netherlands: Amsterdam’s journey toward 100% circular transport

With Amsterdam Circular 2020–2025, the city has integrated municipal fleet electrification, built circular transit hubs, and leveraged robust public-private partnerships for integrated mobility planning. Leaders factor in full-life cycle and supplier scorecards, closing material loops.

Electric and zero-emission buses: lifecycle innovation and battery reuse

Amsterdam deploys best-in-class electric bus lifecycle models, reuses batteries in local energy storage systems and deploys circular EV infrastructure for city-wide shared charging. Battery leasing models balance capital cost and lifecycle risk, with cost savings of up to 15% realised in the latest tenders [3,4].

Circular materials in procurement and fleet renewal in practice

Contracts embed low-impact materials and mandatory use of recycled components. Over 30% of new tram shell materials are now sourced through green procurement criteria and circular supply chain sourcing, supporting Amsterdam’s measurable fleet transition strategies.

Quantifiable impacts and lessons learned

Amsterdam cut transport emissions by 40% and increased material reuse rates above 60% since 2020. Analysis shows circular procurement has lowered average whole-of-life public transport asset cost by 18%, exceeding environmental KPIs [4].

Norway: Oslo’s Nordic leadership in resourceful mobility

Oslo leads on zero-emission construction, embedding circularity in every tramway and metro renewal. The Oslo climate budget supports pioneering circular infrastructure pilots and green capital initiatives that deliver commercial and social value.

Emission-free construction and material reuse in Oslo’s infrastructure

Procurement now mandates reuse of construction materials, strict emissions limits on electric construction machinery, and full infrastructure lifecycle analysis. Pilot tram upgrades reused over 12,000 tonnes of materials in 2024, achieving a 35% reduction in project emissions [2].

Circular procurement and technology for waste reduction

Oslo’s transit authority employs performance-based tenders, deploys digital twins for materials and smart inventory systems, and rates suppliers on circularity with transparent supplier sustainability ratings.

Metrics, case studies, and replicable models

Their approach is now benchmarked via LCA and shared as a replicable framework with Stockholm, Dublin and other cities—proving adoption at scale and across supply chains.

How to design a circular transport system: from buses to infrastructure

Designing a truly circular transport system requires clear **circular design guidelines** that set expectations for durability, reuse, and recyclability from the outset. All components—from bus interiors and batteries to station fixtures—should be specified for long life, modular replacement, and easy disassembly. **Whole system integration** is crucial: circular strategies must span the entire network, connecting vehicle procurement, depots, maintenance hubs, infrastructure, and even digital tools, to optimise resource use across the board.

Effective **intermodal lifecycle planning** enables assets such as batteries, tyres, and structural parts to be cascaded or repurposed across bus, rail, and tram fleets as needs change, ensuring maximum utility before recovery or recycling. Embracing **flexible fleet architecture**—with modular vehicles and interchangeable components—allows transit agencies to adapt swiftly to technological advances and evolving service requirements, minimising waste and stranded assets. Underpinning all of this, **sustainable infrastructure planning** embeds circularity principles into the design, procurement, and renewal of depots, stations, and power systems, favouring low-impact materials and closed-loop construction methods. Such a holistic, forward-thinking approach ensures circularity is embedded not just in vehicles, but throughout the entire public transport ecosystem.

Giving batteries and vehicle components a second life

Guided by robust circular design guidelines, leading operators use battery refurbishment, component cascading, and third-party certification of remanufactured parts. Solutions such as Ireland’s end-of-life battery repurposing contracts and Oslo’s parts remanufacture help capture long-term value and reduce hazardous waste.

Michelin have long been ad advocate of product as a service offering offering wheelset and tyre management for commercial buses as outlined below.

Retrofits and modular design for longevity

Transitioning to modular chassis, standardised parts, and planned retrofits supports both operational flexibility and procurement value. Projects in Utrecht, Dublin, and Oslo are now designed for in-service upgrades instead of full replacements, cutting asset downtime.

Infrastructure upgrades using recycled materials

Sustainable road surfacing, upcycled station materials, and strong construction material loops are required in most major tenders from 2024. Dublin’s MetroLink infrastructure is designed with 30% recycled material content, while all new Norwegian tramways use green building standards.

Circular procurement: driving change from the top down

Policy and tender requirements: setting the bar for circularity

Modern tenders—aligned to EU Green Public Procurement—specify circularity KPIs in tenders, mandatory sustainability clauses, and ESG compliance in contracts. Larger awards are decided on costed full-life-cycle and performance-based specifications.

How cities and regions are embedding circularity in public transport contracts

Regions such as Greater Dublin and Västra Götaland integrate regional policy integration, specified mobility-as-a-service tenders, and align on green contracting models and institutional alignment, driving market-wide scale and innovation.

Measuring impact: proving the value of circular strategies in transport

Accurate measurement is essential for scaling circular transport systems. Establishing robust circularity metrics and resource efficiency indicators allows operators and agencies to quantify improvements in reuse, recycling, and waste reduction. Carbon accounting tools are critical for benchmarking emissions reductions linked to circular practices. These data points should be embedded within comprehensive sustainability performance frameworks and supported by practical impact tracking tools that monitor progress across fleet assets, infrastructure, and supply chains. Transparent, standardised reporting not only demonstrates value to stakeholders but also drives continuous improvement and accountability in achieving circularity goals.

Economic value, resource efficiency, and carbon savings

Circular procurement is delivering notable cost savings (17–25% capex lifetime for bus and rail) from experience in Amsterdam, doubling material intensity reduction targets, and halving embedded GHG emissions against prior benchmarks. These are now standard KPIs with tangible value for board and shareholder reporting.

Case studies and data from C40, OECD, and Circularity Gap reports

Case studies and data from C40, OECD, and Circularity Gap reports

The C40 Cities reports confirm that cities integrating full circular procurement see quicker returns on sustainability investment, improved resource productivity, and stronger financial resilience, with best practice available for adoption [1,3,6,7].

Overcoming challenges on the path to full circularity in transport

But let’s be realistic implementation barriers still exist. Some investors are still cautious about business models such as product-as-a-service – where returns look different to traditional sales. Policymakers are moving in the right direction though frameworks and incentives remain uneven making it difficult to achieve supply chain coordination. And industries from waste management to manufacturing are making progress but still learning how to apply circularity at scale. As yet there remains institutional resistance, market readiness and skills and training gaps. 

Technology, supply chain, and regulatory hurdles

Key barriers include legacy platforms, slow tech adoption, fragmented supply chains, and the need for standardisation. Leading cities in the field of circular economy such as Amsterdam, and Oslo counter these by supporting public sector innovation and incentivised supplier frameworks.

Behavioural and financial barriers still to overcome

Despite growing momentum, widespread adoption of circular economy models in transport faces persistent behavioural and financial barriers. One key challenge is user resistance to change—fleet operators, maintenance teams, and procurement managers are often accustomed to established practices and may be sceptical of new service-based or circular offerings. Addressing this inertia requires not only education but visible demonstration of long-term performance and cost advantages. Another significant factor is the perception of investment risk. Transitioning to circular asset management often involves upfront funding and alterations to business models, creating uncertainty over payback periods and reliability. This challenge is complicated further by the distinction between CAPEX vs OPEX budgeting. Many organisations are still structurally incentivised to prioritise capital expenditure (CAPEX) on new assets, rather than operating expenditure (OPEX) solutions that deliver sustainability benefits and cost savings over time.

Financial incentives remain insufficient or misaligned, with existing support mechanisms often favouring traditional linear procurement. For circular approaches to scale, they must be financially competitive and supported by outcome-based funding and risk-sharing models. Achieving this requires more than just economics—it demands cultural shifts, particularly in public and large private organisations, where legacy processes and siloed budget lines slow adoption. Overcoming these behavioural and financial barriers is essential to transition from pilot projects to mainstream impact in the circular transport sector.

What’s still needed for circular transport to scale

For circular transport solutions to reach their full potential, several enablers must advance in parallel. Stronger policy support is essential—a coherent regulatory environment can accelerate procurement of circular models, provide confidence to innovators, and mandate circularity in public tenders and reporting. The development of targeted financing instruments will help overcome perceived investment risk, for example through green loans, subsidies, or blended finance for circular technology upgrades and service contracts. Public-private collaboration is crucial to share knowledge, align incentives, and invest jointly in pilot initiatives that de-risk circular approaches at scale.

Technology integration can enable real-time tracking, predictive maintenance, and optimal use of assets, but only if paired with organisational willingness to adapt and upskill. Finally, only through system-level planning—coordinating operators, manufacturers, municipalities, and regulators—will circular business models become the default. This demands strategic vision, leadership, and transparent monitoring of end-to-end impacts. By addressing these levers, the sector can shift from small-scale innovation towards a fully integrated, low-waste, resource-efficient mobility future

Lessons for the world: scaling circular public transport globally

Scaling demands more robust policy support, diverse financing instruments (e.g., EIB green bonds), public/private collaboration, advanced tech (such as asset-level digital twins), and consistent system-level planning guidance.

How the UK, Europe, and MENA can adapt proven circular approaches

For the UK, Europe, and MENA regions to benefit from circular economy models in public transport, the emphasis must be on collaborative knowledge transfer and the local adaptation of global pilot programmes. Interregional cooperation is vital—cities and agencies should regularly share learnings about deployment models, contract innovation, and stakeholder engagement. By adapting successful models from the EU’s Circular Economy Action Plan and fitting them within local urban mobility frameworks, regions can accelerate impact. For the UK, aligning regional strategies with its decarbonisation roadmap ensures circular models not only drive efficiency but also deliver clear carbon reductions.

MENA, facing unique climate, demographic, and transport infrastructure challenges, should focus on contextual circular policies that balance rapid urbanisation with resource constraints. Accessing climate finance from international sources, and collaborating with partners on best practices in MENA transport sustainability, will underpin success. The key is building regional adaptation strategies that respond to the climate, economic, and mobility realities in each context—whether retrofitting existing bus depots in London or integrating closed-loop design in new infrastructure across the Gulf. Strategic interregional partnerships inform a joined-up approach, helping all regions deliver meaningful, scalable circular solutions tailored for their diverse needs.

Recommendations for public agencies, industry, and technology partners

To scale circular transport, agencies and industry must prioritise multi-stakeholder engagement from project inception through to operation, ensuring that communities, operators, manufacturers, and policymakers have shared buy-in and can co-create solutions. Investing in capacity building—raising the skills base in circular procurement, asset management, and data analytics—will empower teams to deliver and maintain change. Technology adoption pathways should be mapped in collaboration, with public agencies providing helpful guidance, support, and transparent trials for new digital tools that enable lifecycle management and resource tracking.

Establishing dedicated circular innovation hubs can facilitate experimentation, cross-sector networking, and the scaling of pilot learnings into standard practice. Well-defined, living policy roadmaps at local, national, and regional levels will offer a clear journey for both investment and regulatory compliance, reducing uncertainty and helping innovation reach market maturity faster. All partners must work towards an integrated ecosystem approach, leveraging the strengths of each sector and ensuring continued flexibility as technologies and market conditions evolve.

The key to building a circular future for public transport

The transition to a circular future in public transport hinges on vision alignment across policymakers, industry, and civil society, ensuring all players share clear sustainability and efficiency goals. This vision must be enabled by forming robust strategic partnerships, connecting local authorities with innovative suppliers, social enterprises, and research bodies. Systems thinking is essential; circularity cannot operate in silos but must be embedded across infrastructure, operations, procurement, and end-of-life management.

Delivering lasting change requires long-term planning that prioritises value creation over short-term cost savings, institutionalising circular principles in policy and organisational culture. Effective cross-sector integration will draw together expertise from digital technology, materials science, finance, and environmental management to break down barriers and open new pathways for impact. Ultimately, a successful circular public transport system will be one where innovation, collaboration, and strategic foresight are harnessed to deliver not only environmental benefits but also social and economic value for citizens and cities alike.

Why collaboration and innovation will define the next decade

Strategic ecosystem collaboration—leveraging platforms, alliances, and joint innovation—underpins all successful transitions. Investment in cross-sector leadership and smart, digital mobility upgrades will shape Britain, Ireland, and MENA for decades to come.

From vision to action: steps for agencies, operators, and suppliers

Commercial leaders should:

• Develop phased action plans tied to circular eligibility in funding and awards
• Embed implementation and monitoring in all new contracts and follow up with suppliers
• Work with stakeholders and partners for leverage
• Use robust frameworks for scaling and benchmarking
• Check out free checklist regarding circular economy KPIS

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Sources

1. https://www.c40.org/case-studies/amsterdam-s-circular-economy-roadmap-lessons-learned-and-tools-for-upscaling/
2. https://www.diva-portal.org/smash/get/diva2:1533116/FULLTEXT01.pdf
3. https://circulareconomy.europa.eu/platform/sites/default/files/17037circulaireeconomie_en.pdf
4. https://www.ellenmacarthurfoundation.org/circular-examples/shaping-a-sharing-economy-amsterdam
5. https://www.oecd.org/content/dam/oecd/en/publications/reports/2024/04/the-circular-economy-in-zuid-holland-netherlands_b5553182/d568d66e-en.pdf
6. https://www.frontiersin.org/journals/sustainability/articles/10.3389/frsus.2024.1475155/full
7. https://www.ellenmacarthurfoundation.org/circular-economy-opportunity-and-benefit-factsheets