Exploring the Visibility of Emission Data in Transport Chains Challenges within emissions traceability for companies and their stakeholders Master’s thesis in Quality and Operations Management JOHANNA HJORTSBERG IDA WÅGESSON DEPARTMENT OF TECHNOLOGY MANAGEMENT AND ECONOMICS DIVISION OF SUPPLY AND OPERATIONS MANAGEMENT CHALMERS UNIVERSITY OF TECHNOLOGY Gothenburg, Sweden 2025 www.chalmers.se www.chalmers.se Exploring the Visibility of Environmental Data in Transport Chains Challenges within emissions traceability for companies and their stakeholders JOHANNA HJORTSBERG IDA WÅGESSON Department of Technology management and economics Division of Supply and Operations Management CHALMERS UNIVERSITY OF TECHNOLOGY Gothenburg, Sweden 2025 Exploring the Visibility of Environmental Data in Transport Chains Challenges within emissions traceability for companies and their stakeholders JOHANNA HJORTSBERG IDA WÅGESSON © JOHANNA HJORTSBERG, 2025. © IDA WÅGESSON, 2025. Department of Technology Management and Economics Chalmers University of Technology SE-412 96 Gothenburg Sweden Telephone + 46 (0)31-772 1000 Cover: Visualisation of data sharing in transport chains created in DALL-E showing a world map with different locations being connected by different transport modes and linkages. Gothenburg, Sweden 2025 iv Exploring the Visibility of Environmental Data in Transport Chains Challenges and opportunities within emissions traceability for companies and their stakeholders JOHANNA HJORTSBERG IDA WÅGESSON Department of Technology Management and Economics Chalmers University of Technology SUMMARY In response to the increasing urgency of climate change and the introduction of reg- ulatory frameworks such as the EU’s Corporate Sustainability Reporting Directive (CSRD), companies are under mounting pressure to quantify and report greenhouse gas (GHG) emissions throughout their value chains. The transport sector, which ac- counts for a significant share of global emissions, presents particular challenges due to its fragmented structure, complex stakeholder networks, and widespread reliance on subcontracted services. Despite recent standardisation efforts, including ISO 14083 and the GLEC Framework, companies continue to face difficulties in access- ing high-quality emission data, ensuring methodological consistency, and facilitating reliable data exchange. This study explores the barriers and enablers related to the collection and sharing of transport emissions data between transport service providers and transport buyers. A qualitative case study was conducted, based on 19 semi-structured interviews with companies operating across various sectors and supply chain roles. The collected data was analysed through a thematic analysis, which allowed for the identification of recurring patterns and underlying challenges across stakeholder groups. To structure the findings and enhance clarity, a framework was developed that organises the key themes and illustrates how they interact within the broader context of transport emissions reporting. The results of the study show that the main barriers to effective emissions reporting lie not in the absence of regulatory ambition, but in the limited practical capacity to meet increasing data demands. A key gap exists between top-down policy re- quirements and the day-to-day realities of data collection and exchange, especially within subcontracted and SME-dominated logistics chains. The findings highlight the urgent need for interoperable digital systems, harmonised templates, and support mechanisms that enable more efficient, accurate, and scalable reporting. Further- more, the study underscores the importance of sector-wide collaboration and shared responsibility among transport buyers, providers, and policymakers. Keywords: Emission Data, Transport Emission Calculation, Transport Emission Reporting, Logistic Emission Calculation, ISO 14083, CSRD. v Acknowledgements We would like to begin by expressing our sincere gratitude to Centiro for welcoming two students with a somewhat scattered idea of writing a thesis related to CSRD. The journey has been both engaging and rewarding, with many valuable discussions and fruitful exchanges throughout the spring. It has truly been a pleasure collabo- rating with you. We also want to thank our supervisor, Tarun, for his continuous support, insightful ideas, and guidance in structuring our work. Your input has been greatly appreciated. Finally, we would like to extend our thanks to all the companies that generously participated in our interviews. We are truly grateful for the time you took to support our data collection, and we found the conversations both highly enjoyable and incredibly insightful. Ida Wågesson & Johanna Hjortsberg, Gothenburg, June 2025 vii List of Acronyms Below is the list of acronyms that have been used throughout this thesis listed in alphabetical order: CSRD Corporate Sustainability Reporting Directive EFRAG European Financial Reporting Advisory Group ERP Enterprise Resource planning ESRS European Sustainability Reporting Standards FMS Fleet Management System GHG Greenhouse gas GLEC Global Logistics Emissions Council ISO International Organization for Standardization OEM Original Equipment Manufacturer SME Small and medium-sized enterprises TMS Transport Management System TTW Tank-to-Wheel WTT Well-to-Tank WTW Well-to-Wheel ix Contents List of Acronyms ix List of Figures & List of Tables xiii 1 Introduction 1 1.1 Background . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1.2 Purpose . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1.3 Research Questions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1.4 Structure of the Report . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 Theory 5 2.1 Standardising Emissions Reporting . . . . . . . . . . . . . . . . . . . 5 2.1.1 CSRD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 2.1.2 EN 16258 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 2.1.3 GLEC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 2.1.4 ISO 14083:2023 . . . . . . . . . . . . . . . . . . . . . . . . . . 8 2.1.5 CountEmissionsEU . . . . . . . . . . . . . . . . . . . . . . . . 9 2.2 Drivers for Transport Emission Reporting . . . . . . . . . . . . . . . 9 2.3 Challenges in Transport Emission Reporting . . . . . . . . . . . . . . 11 2.3.1 Organisational and Methodological Barriers . . . . . . . . . . 11 2.3.2 Data Quality and Availability . . . . . . . . . . . . . . . . . . 13 2.3.3 Data Sharing and Collection . . . . . . . . . . . . . . . . . . . 17 2.4 The Need for Accurate Data . . . . . . . . . . . . . . . . . . . . . . . 19 2.4.1 Data Categories . . . . . . . . . . . . . . . . . . . . . . . . . . 19 2.4.2 GHG Emission Factors . . . . . . . . . . . . . . . . . . . . . . 20 2.4.3 Impact of Input Parameters on Emissions . . . . . . . . . . . 21 3 Methods 23 3.1 Empirical research . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 3.1.1 Secondary Data . . . . . . . . . . . . . . . . . . . . . . . . . . 23 3.1.2 Interviews . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 3.2 Company Selection and Study Implications . . . . . . . . . . . . . . . 26 3.2.1 Transport Buyers . . . . . . . . . . . . . . . . . . . . . . . . . 26 3.2.2 Transport Service Providers . . . . . . . . . . . . . . . . . . . 28 3.3 Centiro . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 4 Result 33 xi Contents 4.1 Barriers and Challenges . . . . . . . . . . . . . . . . . . . . . . . . . 34 4.1.1 Organisational and Methodological Barriers . . . . . . . . . . 34 4.1.2 Data Quality and Availability . . . . . . . . . . . . . . . . . . 38 4.1.3 Data Sharing and Collection . . . . . . . . . . . . . . . . . . . 50 4.2 Drivers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56 4.2.1 External Drivers . . . . . . . . . . . . . . . . . . . . . . . . . 56 4.2.2 Internal Drivers . . . . . . . . . . . . . . . . . . . . . . . . . . 59 4.3 Enablers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61 4.3.1 Technological Solutions and Standardisation . . . . . . . . . . 61 4.3.2 Collaborative practices . . . . . . . . . . . . . . . . . . . . . . 65 5 Analysis 69 5.1 Framework for Emission Data Visibility . . . . . . . . . . . . . . . . . 69 5.2 Research Question 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . 71 5.3 Research Question 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . 75 6 Conclusion 81 Bibliography 83 A Appendix 1 I B Appendix 2 III xii List of Figures 2.1 Visualisation of the WTT + TTW = WTW calculation . . . . . . . . 21 3.1 Conceptualisation of transport structure and relations . . . . . . . . . 29 5.1 Framework for emission data visibility . . . . . . . . . . . . . . . . . 70 xiii List of Figures xiv List of Tables 2.1 Primary methods for GHG emissions calculations in the transport sector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 2.2 Drivers for Transport Emission Reporting from Literature . . . . . . 10 2.3 Organisational and Methodological Barriers from Literature . . . . . 11 2.4 Data Quality and Availability from Litareture . . . . . . . . . . . . . 13 2.5 Data Sharing and Collection Challenges from Literature . . . . . . . 17 2.6 List of key parameters for determining GHG emissions . . . . . . . . 22 3.1 Interviewed Transport Buyers . . . . . . . . . . . . . . . . . . . . . . 27 3.2 Interviewed Transport Service Providers . . . . . . . . . . . . . . . . 30 4.1 Overview of Themes and Associated Challenges . . . . . . . . . . . . 34 4.2 Organisational and Methodological Barriers . . . . . . . . . . . . . . 34 4.3 Data Quality and Availability Challenges . . . . . . . . . . . . . . . . 39 4.4 Transport Assets and Use of Subcontractors Among Interviewees . . . 48 4.5 Data Sharing and Collection Challenges . . . . . . . . . . . . . . . . 50 4.6 List of external Drivers . . . . . . . . . . . . . . . . . . . . . . . . . . 57 4.7 List of internal Drivers . . . . . . . . . . . . . . . . . . . . . . . . . . 60 4.8 Enabling technological Solutions and Standardisations . . . . . . . . . 62 4.9 Enabling collaborative practices . . . . . . . . . . . . . . . . . . . . . 65 5.1 Primary challenges and barriers in the transport chain . . . . . . . . 71 5.2 Effects of Current Emissions Data Practices . . . . . . . . . . . . . . 76 xv List of Tables xvi 1 Introduction Transport plays a vital role in modern society, enabling the movement of goods in business operations and facilitating mobility through land, air and sea. The seam- less integration of different modes of transport has become routine, often overlooking the scale and environmental impact of these operations (World Economic Forum, 2022b; Stockholm Environment Institute, 2023). With increasing urgency to address climate change, frameworks and regulatory ini- tiatives have emerged to improve transparency in emissions accounting and support more informed decision making by companies and consumers. Notable among these efforts are the International Organization for Standardization (2023) standard and proposed EU regulations EUR-Lex (2020), which establish guidelines for reporting greenhouse gas (GHG) emissions across complex transport chains. These initiatives aim to increase accountability, encourage innovation, drive behavioural change, and ensure emissions reductions aligned with international goals. However, the frag- mented and global nature of transport chains, characterised by numerous small ac- tors, poses significant challenges to comprehensive emissions accounting (EUR-Lex, 2020). 1.1 Background The transport sector is essential for the global economy, but it remains a major con- tributor to GHG emissions. In 2020, transport accounted for approximately 26% of the GHG emissions in the EU, with road transport alone responsible for around 20%. (European Commission, 2022). To address climate change, the European green deal (European Commission, 2019) and the European climate law (European Commission, 2021b) have set the goal of achieving climate neutrality by 2050, aligning with the Paris Agreement (United Nations, 2024). Within this framework, the EU aims to reduce transport-related emissions by 90% by 2050 (European Commission, 2019). However, projections suggest that global transport demand could double by 2050, potentially more than double the emissions in the absence of mitigation efforts (Smart Freight Centre, 2024). The growing pressure for more sustainable transport options, combined with reg- ulatory emission reporting requirements and voluntary climate commitments, has 1 1. Introduction increased the focus on quantifying GHG emissions in the sector (CLECAT, 2024). This has been reinforced by the EU Corporate Sustainability Reporting Directive (CSRD), which since January 2023 requires larger companies to report their emis- sions, including emissions across their value chains (CLECAT, 2024). Over time, various stakeholders have developed calculation methods and frameworks for GHG emissions in transport. However, the absence of a universally adopted methodology and globally harmonised reporting requirements has led to a frag- mented landscape. As a result, actors often apply different models, yielding incon- sistent and incomparable data that reduce transparency, traceability, and accuracy. Consequently, researchers and industry organisations have advocated for a common framework (EUR-Lex, 2020; Smart Freight Centre, 2021; CLECAT, 2022). Several initiatives have responded to these challenges. In 2012, the European Com- mittee for Standardisation introduced EN 16258, the first transport-specific standard for calculating and reporting energy consumption and GHG emissions (EUR-Lex, 2020). In 2016, the Global Logistics Emissions Council (GLEC), led by the Smart Freight Centre, developed a framework to further standardise the accounting of transport emissions (Smart Freight Centre, 2024). This framework was instrumen- tal in the creation of ISO 14083, an international standard released in March 2023, which offers a comprehensive methodology for quantifying and reporting emissions between transport modes and logistics hubs (International Organization for Stan- dardization, 2023). Other initiatives, such as the French Transport Code, the GHG Protocol, and SmartWay, have also established reporting standards, the French Code specifying additional national requirements (EUR-Lex, 2020). A central challenge in emissions reporting is the availability, quality, and exchange of accurate data across complex supply chains. The logistics industry comprises many small and medium sized enterprises (SMEs) that often lack the resources to implement robust emission measurement systems (European Parliament, 2023). A survey of 800 European road transport SMEs found that 43% did not measure emissions at all, 32% did so only for internal operations, and just 25% extended the measurement to customer levels (Finger and Serafimova, 2021). Outsourcing is common in the industry, further complicating data access and reporting. Effective data exchange between stakeholders is therefore essential, but not without barriers. Businesses may be reluctant to share emissions data due to concerns about com- petition, ownership, and confidentiality (European Parliament, 2023). As emissions calculations depend on inputs such as fuel consumption, vehicle type, and route efficiency, companies relying on subcontractors often lack direct access to primary data. Consequently, many use activity-based approaches with default or estimated values instead of energy-based calculations grounded in operational data, introduc- ing uncertainties and inaccuracies (CLECAT, 2024; European Parliament, 2023). In the absence of reliable primary data, companies often rely on default or modelled datasets. Although default data reflect industry averages, they may not represent actual operations and can significantly distort results (Auvinen et al., 2014). 2 1. Introduction Moreover, as EUR-Lex (2020) notes, emission factors used in these calculations vary widely between databases, with differences in national scope, specification, and underlying models, resulting in divergent results even when the same method is ap- plied. Finger and Serafimova (2021) emphasise that without high quality data, it is impossible to evaluate decarbonisation options, track emission reduction progress, or set science-based targets. The lack of standardised data formats further hinders interoperability and emission tracking between systems and stakeholders (EUR-Lex, 2020). Although standards such as ISO 14083 and the GLEC framework provide struc- tured methodologies, their implementation varies between industries and countries, limiting their global effectiveness (CLECAT, 2024). To fully realise the potential of harmonised reporting standards, it is critical to ensure both the collection and creation of accurate emissions data. As surveys indicate that most companies do not measure their GHG emissions themselves but rely on data from transport providers, carriers must expand their measurement capabilities. 1.2 Purpose The purpose of this study is to explore the challenges and barriers related to col- lecting and sharing transport emission data among transport service providers and transport service buyers in the transport chain. By identifying obstacles in data availability and exploring enablers for improved information sharing, this study seeks to contribute to improving the transparency, comparability, and reliability of emissions data. 1.3 Research Questions Q1. What are the primary challenges and barriers faced by transport service providers and transport service buyers in collecting transport emission data? Q2. How do the existing practices and technologies for sharing transport emission data among stakeholders in the transport chain impact the efficiency and accuracy of data exchange? 1.4 Structure of the Report This report is structured into six main chapters, each designed to build an under- standing of the challenges and opportunities related to the visibility of environmental data in transport chains. Chapter 2 provides the theoretical foundation for the study. It introduces the key frameworks relevant for transport emissions reporting, such as CSRD, EN 16258, GLEC, and ISO 14083. The chapter also explores the main drivers behind emissions 3 1. Introduction reporting, the associated challenges, and the importance of accurate data. Chap- ter 3 outlines the methodology used in the study. It explains how the empirical material was collected through interviews and secondary data, the selection process of the participating companies, and the role of Centiro in this study. Chapter 4 presents the empirical findings of the interviews. The results are structured around barriers and challenges, drivers and enables improving for emissions reporting. The perspectives of both transport buyers and transport service providers are included to capture different points of view throughout the value chain. Chapter 5 provides an analysis of the findings by comparing it with the theory presented in Chapter 2. Initially, a framework is presented that was developed to provide an understanding of the results. This is followed by the research questions that have guided the study. These are thoughtfully addressed to be able to answer the purpose of the study. Chapter 6 presents the main conclusions of the study by identifying the main challenges and barriers in collecting and sharing transport emission data among transport service providers and transport service buyers in the transport chain. The report concludes with references and appendices that contain the questionnaires used. 4 2 Theory This chapter presents the theoretical framework developed to support the study. It is based on a review of the existing literature on emissions reporting methodologies and the challenges associated with calculating emissions in transport systems. The review also includes research on the sharing of emissions data across supply chains and between stakeholders. Additional efforts were made to identify the literature that addresses the availability and use of different data types by transport buying companies. However, most of the existing literature approaches this topic from a general perspective, with limited qualitative studies or empirical findings specific to transport buyers. The chapter begins by outlining the need for emissions reporting, highlighting key frameworks and regulations that influence reporting practices. Then it examines the main drivers and challenges associated with transport emissions reporting. Finally, the chapter discusses the importance of accurate data, describing the different data types used in emissions calculations and the most influential factors affecting data quality and reliability. 2.1 Standardising Emissions Reporting Sustainability reporting is gaining prominence, particularly following the introduc- tion of the CSRD in 2023. Given the breadth of reporting requirements that span most aspects of business operations, several voluntary frameworks have been devel- oped to support emissions reporting. These initiatives aim to harmonise the calcu- lation and reporting of GHG emissions from transport services, though they vary in scope and complexity. Before 2012, there was no unified standard for report- ing transport emissions, resulting in inconsistencies and output that was difficult to compare between organisations (CLECAT, 2024). As illustrated in Table 2.1, a wide range of methods has since emerged, varying in terms of transport modes and segments covered. Initial efforts included the GHG Protocol (2001) and ISO 14064-1 (2006), which provided corporate-level reporting guidelines, but lacked spe- cific methods for transport chains (International Organization for Standardization, 2006; World Resources Institute and World Business Council for Sustainable Devel- opment, 2004). Other frameworks, such as ISO 14067 (focussing on product carbon footprints) and national guidelines such as DEFRA (Department for Environment, Food and Rural Affairs) (UK) or EU Emissions Trading System (EU ETS) for avi- ation, introduced sector-specific approaches (International Organization for Stan- 5 2. Theory dardization, 2018; Ehrler and Seidel, 2014). Calculation tools such as EcoTransIT and SEMBA, and various emission factor databases also emerged. However, without common regulation, these tools produced divergent results (Ehrler and Seidel, 2014). Table 2.1: Primary methods for GHG emissions calculations in the transport sector Standard/methodology Modes Segments GHG protocol All modes Passengers & freight EN 16258 All modes Passengers & freight ISO 14083 All modes Passengers & freight PEF All modes Passengers & freight French transport code (Article L. 1431-3) All modes Passengers & freight Parcel Delivery Environmental Footprint All modes Parcel GLEC All modes Freight SmartWay All modes Freight Topsector All modes Freight Clean Cargo Working Group Maritime Freight EU MRV Maritime Freight IMO DCS Maritime Freight CORSIA Aviation Passengers & freight ICAO/IATA RP1678 Aviation Freight IATA Aviation Passengers EU ETS aviation Aviation Passengers & freight Source: (Schroten et al., 2024) Although CSRD is not included in Table 2.1, this is because CSRD is not a methodol- ogy for calculating emissions. Rather, it is a directive that mandates sustainability reporting and refers companies to the ESRS (European Sustainability Reporting Standards) for guidance on what must be reported. The ESRS outlines the required disclosures but does not specify how to calculate emissions. Therefore, the frame- works introduced in more detail in the following sections, EN 16258, GLEC, ISO 14083, and CountEmissionsEU, are specifically chosen because they focus on how to calculate transport-related GHG emissions. These methodologies represent the main approaches referenced in policy and practice today, and they form the basis for the practical calculation work conducted by companies. They are also the methods most frequently mentioned in interviews and secondary sources in this study. 6 2. Theory 2.1.1 CSRD The CSRD, introduced in January 2023, is part of the EU’s Green Deal and aims to improve consistency, comparability, and accessibility of sustainability information (European Commission, 2021a). Given the significant transition required for busi- nesses, it is being gradually rolled out based on company size, starting in 2024 with companies previously covered by the Non-Financial Reporting Directive (NFRD) (European Commission, 2025). Over time, additional companies will be included in the scope of the directive (European Council, 2024). By allowing access to compara- ble non-financial information from investment entities between the EU, the directive is expected to facilitate investor assessments of sustainability risks and the broader implications of their investments (European Commission, 2021a). The European Commission (2023b) believes that an EU directive is essential to establish uniform regulations throughout the EU, thus mitigating the risk of incon- sistent reporting requirements between member states. Such discrepancies could lead to increased costs for companies operating across borders (European Commis- sion, 2023b). At the global level, an initiative of this nature is also expected to positively influence the development of policies on sustainability reporting (Euro- pean Commission, 2021a). To enable companies to meet the requirements of the CSRD in practice, the Euro- pean Financial Reporting Advisory Group (EFRAG) has developed the reporting standards known as the European Sustainability Reporting Standards (ESRS) (Eu- ropean Commission, 2025). The ESRS also takes into account existing voluntary sustainability reporting frameworks, to prevent double reporting by companies (Eu- ropean Commission, 2023a). The CSRD follows the principle of double materiality, which means that companies must report both their impact on the environment, such as emissions and pollution, and how environmental factors, such as climate change, affect them (European Commission, 2023b). Emissions are classified into three scopes to provide a comprehensive view of a company’s climate impact (ESRS E1 Climate Change, 2022). Scope 1: Direct emissions from a company’s own operations, for example, emissions from facilities and vehicles. (ESRS E1 Climate Change, 2022). Scope 2: Indirect emissions from energy consumption, particularly purchase of elec- tricity, district heating, or cooling from external providers. Although these emissions are not generated directly by the company, they are a consequence of its activities. (ESRS E1 Climate Change, 2022). Scope 3: Indirect emissions that occur outside of the company’s direct operations but within its value chain. These can originate from suppliers, transportation, prod- uct use, and waste management (ESRS E1 Climate Change, 2022). Scope 3 can be divided into upstream (indirect emissions related to purchased goods and services) and downstream (indirect emissions related to sold goods and services) (WBCSD and WRI, 2011). 7 2. Theory For a complete climate impact assessment, total GHG emissions must include all three scopes (ESRS E1 Climate Change, 2022). In February 2025 the European Commission adopted a simplification package, called the Omnibus package, which entails several changes to the CSRD. The package ex- empts about 80% of companies that were previously covered by the CSRD and introduces some changes in how reporting should be conducted. Reporting require- ments for companies currently covered by the CSRD will be postponed by two years. These changes aim to make sustainability reporting more efficient and less burden- some, while still holding the largest companies with the greatest environmental and climate impact accountable. (Commission, 2025). 2.1.2 EN 16258 Published in 2012 by the European Committee for Standardisation, EN 16258 was the first European standard for quantifying GHG emissions in transport services (CLECAT, 2024). It applies to all modes of transport and uses the Well-to-Wheel (WTW) approach, which incorporates both upstream (Well-to-Tank, WTT) and operational (Tank-to-Wheel, TTW) emissions. The development of EN 16258 was driven by the need for a standardised method to compare transport emissions. While EN 16258 provided a foundational methodology, differences in interpretation led to inconsistent results across companies, prompting the need for further harmonisation (Ehrler and Seidel, 2014). 2.1.3 GLEC Developed by the Global Logistics Emissions Council (GLEC) and launched in 2016, the GLEC Framework provides a globally harmonised approach to calculating emis- sions in multimodal freight chains (Smart Freight Centre, 2024; Fancello et al., 2023). The framework is updated continuously to align with developments in the climate and logistics sectors. Widely used by carriers, freight forwarders, and logis- tics providers, it enables transparent comparisons across transport options (Fancello et al., 2023; Smart Freight Centre, 2024). The framework aligns with several other standards, including the GHG Protocol, the UN’s Global Green Freight Action Plan, and CDP Reporting. It has also significantly influenced the development of ISO 14083 (Smart Freight Centre, 2024). 2.1.4 ISO 14083:2023 ISO 14083:2023, published in 2023, replaced EN 16258 as a standard for quantifying and reporting GHG emissions from transport chains (International Organization for Standardization, 2023). It includes more detailed guidelines to account for both direct and indirect emissions throughout the entire transport chain (International Organization for Standardization, 2023; CLECAT, 2024). Developed by ISO in col- laboration with Smart Freight Centre and the German Institute for Certification, it builds on the GLEC Framework (Smart Freight Centre, 2023). The purpose of ISO 8 2. Theory 14083 is to create an international standard that can be used by both small and large companies within global transport chain operations. It includes all transport modes and extends coverage to operational emissions from logistics hubs (Interna- tional Organization for Standardization, 2023). The standard outlines four data types for emissions calculations: • Option A: Primary data • Option B: Model-Based Calculation • Option C: Default values from a database • Option D: Values from contracted operator using Option A or B. Primary data is preferred, with clear guidance to prioritise modelled data over de- fault values when primary data is unavailable. The selected method must accurately reflect actual emissions, not just minimise reported figures (International Organi- zation for Standardization, 2023). Further explanations on the different data types can be found in Section 2.4.1. 2.1.5 CountEmissionsEU CountEmissionsEU is a proposed EU initiative to introduce a mandatory standard methodology for emissions reporting in transport, aiming to improve data compara- bility and reliability across Europe. The proposal, tabled in July 2023, is currently under legislative review. If adopted, companies reporting emissions from transport chains would be required to follow ISO 14083, though reporting itself would remain voluntary. The proposal also includes certification of external calculation tools to ensure compliance with the methodology. As in ISO 14083, primary data is pri- oritised, with a clear data hierarchy for consistent application of the methodology (European Parliament, 2023). 2.2 Drivers for Transport Emission Reporting Since most frameworks for transport emissions reporting have historically been vol- untary, it is important to understand the underlying drivers that motivate organisa- tions to engage in such efforts. Understanding these drivers also provides insight into some of the challenges associated with implementing emissions reporting in practice. 9 2. Theory Table 2.2: Drivers for Transport Emission Reporting from Literature Drivers Description Internal • KPI for internal sustainability performance • Adapting to regulations and prepare for future standards • Operational efficiency improvements and cost savings External • Commercial pressure • Competitive advantage • Emissions tracking is often a low organisational priority Anticipating Regulatory Developments • Preparing for legal requirements • Regulatory readiness Dobers et al. (2019) categorises the drivers into three different categories. The first relates to internal performance and strategic alignment. Tracking emissions is necessary to monitor sustainability goals and internal improvements. Calculating emissions and related key performance indicators (KPIs) enables organisations to evaluate their progress, support strategic decision-making, and report transparently to external stakeholders such as customers and shareholders (Dobers et al., 2019). Additionally, Finger and Serafimova (2021) emphasise the growing business case for carbon accounting. Emissions tracking is increasingly viewed as a means to improve operational efficiency, reduce costs, and lower emissions. The ability to demonstrate environmental progress can also provide competitive advantages, particularly when customers are willing to pay a premium for more sustainable transport solutions. The second driver is external commercial pressure. As noted by Dobers et al. (2019), organisations are often required to report emissions to fulfil customer or contractual demands. This is further supported by Kühne Logistics University (2024a), whose survey shows that customer pressure is the second most important motivation for SMEs to invest in decarbonisation. While emissions reporting is not explicitly men- tioned, it can reasonably be assumed as a prerequisite for demonstrating progress, as measurement is essential for validation. The third driver involves anticipating regulatory developments. According to Dobers et al. (2019), many companies adopt emissions reporting to prepare for future legal requirements, positioning themselves as proactive and adaptable. Engaging in GHG reporting prior to it becoming mandatory demonstrates not only regulatory readi- 10 2. Theory ness but also a commitment to environmental responsibility. As noted by (World Economic Forum, 2022a), this proactive approach is increasingly seen as necessary for all companies aiming to remain competitive and compliant in a rapidly evolving regulatory landscape. 2.3 Challenges in Transport Emission Reporting Emissions calculations are influenced by several factors, including the quality, data completeness, calculation tools, system boundaries, modelling assumptions, and emission factors. This section synthesises key challenges from the literature re- garding sustainability reporting within transport emissions. 2.3.1 Organisational and Methodological Barriers Table 2.3 presents challenges identified in the literature, categorised here as organi- sational and methodological barriers. The remainder of this section provides a more detailed description of these challenges and their implications. Table 2.3: Organisational and Methodological Barriers from Literature Challenge Description Fragmented reporting standards • Different actors use varied methods to collect and report emissions • Inconsistent terminologies and practices complicate comparison • Lack of harmonised metrics • Feasibility for companies competing with granularity from regulations Regulatory ambiguity • Weak enforcement limits compliance incentives • Need for alignment with existing regulations to avoid extra administration • Potentially complicates international operations and data collection • Fragmented reporting standard To effectively monitor, benchmark, and improve environmental performance, a clear understanding of current and historical levels is needed (European Parliament, 2023; Finger and Serafimova, 2021). However, the absence of a universally accepted methodology for emission data collection, calculation and reporting poses a signifi- cant challenge (EUR-Lex, 2020). In the current landscape, companies must choose 11 2. Theory among a wide range of frameworks (see Section 2.1), tools, and emission factors databases (see Section 2.4), each differing in scope, allocation logic, methodology, default values, objectives, and perspectives (European Parliament, 2023). Conse- quently, methodological inconsistencies, large variances, and fragmented reporting practices emerge, undermining the accuracy, comparability, relevance, and reliability of emission data and reporting (Dobers et al., 2019; Finger and Serafimova, 2021; European Parliament, 2023). A key issue is the lack of a holistic framework that encompasses all transport modes, regions, and operational contexts. This gap results in significant discrepancies not only between companies but also across various transport modes (Dobers et al., 2019; Finger and Serafimova, 2021). In addition, emissions scopes and organisa- tional boundaries are often defined differently. For instance, emissions may be in- consistently classified as direct (Scope 1) or indirect (Scope 3), and many reports exclude emissions from upstream activities or administrative operations (Finger and Serafimova, 2021). A review of 121 corporate sustainability reports found that only a small fraction included emissions from energy supply or administrative processes, resulting in substantial underestimations of overall carbon footprints (Dehdari et al., 2023). Frameworks also differ in granularity, with some applying TTW and others WTW perspectives. Additional complexity arises in shared transport operations, where emission allocation across multiple users is often unclear and non-standardised. Emissions reporting also varies across hierarchical levels, ranging from product-level calculations to corporate-level aggregates, making it difficult to integrate or com- pare data across different levels of the supply chain Finger and Serafimova (2021). These inconsistencies are illustrated by Stevens (2018) who described how Heineken voluntary explored the possibility of broadening their emission report to include air pollutants, illustrating the evolving and often ambiguous nature of emissions scoping. Because reporting entities often determine their own reporting boundaries without providing clear justifications, the comparability of reported emissions data across companies is compromised (Stevens, 2018). This fragmentation reflects a broader tension between methodological rigour and operational feasibility. While academia often promotes granular data collection, companies must consider constraints of time, budget, and personnel. As noted by Stevens (2018), some companies question whether increased accuracy justifies the cost. This highlights a broader divergence where academic approaches prioritise rigour, while companies value simplicity, practicality and comparability. To improve consistency, Dobers et al. (2019) recommend adopting an ISO standard. However, stakeholder feedback in Finger and Serafimova (2021) highlight industry support for the GLEC Framework, which is favoured for its flexibility, adaptability, and ongoing updates. • Regulatory ambiguity To promote wider adoption of harmonised frameworks, some stakeholders advocate 12 2. Theory for mandatory emissions reporting. The European Commission’s CountEmission- sEU initiative aims to standardise reporting methodologies across the transport sector. Yet, it also recognises that in the absence of mandatory obligations, many companies continue to rely on diverse and inconsistent methodologies (European Parliament, 2023). Kühne Logistics University (2024a) emphasises the pivotal role of national governments and the EU in decarbonising European road freight. Their findings suggest that stakeholders view regulatory intervention as essential for estab- lishing unified methodologies and clearer guidance. Furthermore, the effectiveness of any new framework depends on its widespread adoption among cargo operators, without broad industry uptake, its impact remains limited (Finger and Serafimova, 2021). Similarly, Stevens (2018) highlight that the effectiveness of voluntary frame- works like GLEC depends heavily on collective adoption across the industry. How- ever, their study also underscores a key challenge: while academia tends to focus on the lack of standardisation, companies more often cite data access as the primary barrier. Notably, research suggests that developing a rigid, all-inclusive framework is not sufficient on its own. Alignment with existing regulations, such as those within the EU, is crucial to avoid creating additional administrative burdens or duplicating reporting obligations (Finger and Serafimova, 2021). For example, European Parlia- ment (2023) note that the proposed CountEmissionsEU regulation could complicate reporting for international operators working across different jurisdictions. Varia- tions in national reporting rules further compound this challenge, reducing data comparability and increasing compliance costs for multinational firms (Finger and Serafimova, 2021). 2.3.2 Data Quality and Availability Table 2.4 presents challenges identified in the literature, categorised here as chal- lenges with data quality and availability. The remainder of this section provides a more detailed description of these challenges and their implications. Table 2.4: Data Quality and Availability from Litareture Challenge Description Limited data access • Emissions data from subcontractors is often unavailable • Different degree of data depending on mode and structure of transport chain (Continued on next page) 13 2. Theory (Continued from previous page) Challenge Description Inconsistent practices • Varying databases used for emission factors • Different calculation methods and model assumptions • Data quality varies and causes reduced trust Technological limitations • IT systems between actors are not interoperable • Many systems lack real-time tracking capability • Aggregating and integrating data from multiple sources is complex • Limited data access Improving the collection and accessibility of operational data and current emissions levels is essential for accurate emissions reporting and for advancing the transport sector toward more environmentally sustainable practices and more informed de- cisions regarding transport mode selection (Finger and Serafimova, 2021). While much of the existing literature emphasises harmonising of reporting frameworks, challenges related to data collection are also addressed. Stevens (2018) report that, according to one interviewed expert, the lack of comparability in emission results stems less from methodological differences and more from data related issues. In line with this, the GHG Protocol recommends prioritising robust data collection systems, noting that the availability of high-quality data is often the primary obsta- cle in developing GHG inventories (World Resources Institute and World Business Council for Sustainable Development, 2004). Dobers et al. (2019) identify data col- lection, data sharing between different stakeholders in the supply chain, and data quality as the main barrier to emission calculation, with primary data often being non-existent. Even when clear allocation methods are applied, such as those aligned with EN16258, implementation remains difficult due to missing or inaccessible data (Ehrler et al., 2016). Finger and Serafimova (2021) argue that more disaggregated and activity-based primary data is needed to enable eco-labelling of products, sup- port consumer transport choices, offer adequate recycling of products, and track progress on emission reduction targets. One structural issue is the limited control organisations have over the full extent of transport chains. Multimodal and subcontracted arrangements introduce admin- istrative complexity and hinder data collection and transparency, as the ability to collect emissions data from transport providers depend on the extent of control exerted over the transport. This leads firms to rely on internal data to maintain traceability (Stevens, 2018). Moreover, data availability varies by transport mode. Road transport, for instance, has seen increased adoption of granular tracking meth- 14 2. Theory ods, while inland waterway and rail sectors often lag behind (Finger and Serafimova, 2021). Another dimension is trust. Data uncertainties can arise from inconsistencies in fuel consumption records (Finger and Serafimova, 2021), vehicle specifications (Kiout- sioukis et al., 2004), or trip distances (EUR-Lex, 2020), all of which are sensitive to the data collection methods used and to real-world operating conditions (Euro- pean Parliament, 2023). European Parliament (2023) report that transport buyers have limited confidence in the data provided by carriers. As a result, users may not demand emissions data, which in turn reduces carriers’ motivation to invest in accurate calculations. • Inconsistent practices The absence of a standardised framework has led to a fragmented practices across the sector. A wide range of tools, databases, and modelling methods are employed, often based on varying assumptions and data inputs. Due to significant data gaps, the use of default or modelled values is common. Consequently, there is substantial variation in data quality, input data types, as well as data collection efforts across firms (European Parliament, 2023; Ehrler et al., 2016). Default values are based on general assumptions, such as average vehicle efficiency or driver behaviour, that may not reflect actual operations (Kioutsioukis et al., 2004). Methodological differences also persist in terms of granularity, system boundaries, and geographical scope, resulting in incompatible outputs. As Finger and Serafi- mova (2021) observe, the sector suffers from an “over-reliance on industry-default values of carbon intensity and a failure to regularly recalibrate emission factors in line with technology advancements and improvements in business practice”. To address these shortcomings, several authors have advocate for default values to be scientifi- cally validated and independently verified (European Parliament, 2023; Ehrler et al., 2016). According to Ehrler et al. (2016), a centralised and widely accepted data- bank, ideally established at the EU level, could significantly enhance the reliability and consistency of emissions data. Similarly, emission factors, used to estimate emissions per unit of fuel or activity, fur- ther contribute to inconsistencies, varying widely in their source, transparency, and relevance (International Organization for Standardization, 2023; Plassmann et al., 2010; Finger and Serafimova, 2021). Selecting appropriate factors is challenging, as assumptions are often undocumented or poorly explained (Stevens, 2018). To improve consistency across transport modes and contexts, Finger and Serafimova (2021) emphasise the need for regular updates and greater transparency. The selective use to apply default values, particularly when these yield lower re- ported emissions, undermines trust and credibility. Although this may be beneficial for the reporting entity, it undermines the overall reliability of emissions reporting. European Parliament (2023) and Stevens (2018) note that a harmonised verification system would strengthen data reliability, but may simultaneously reduce the will- 15 2. Theory ingness to share data due to added costs and administrative burden. Even when using the same tools and datasets, subjective judgment in areas like boundaries setting and data allocation methods introduce subjectivity to the pro- cess (Kioutsioukis et al., 2004). Dobers et al. (2019) describe this challenge as a trade-off between granularity and feasibility, while aggregated default values are easier to apply, they may not reflect actual operations, conversely, detailed data de- mand more resources and specialised knowledge. These issues are especially evident in decentralised organisational and complex supply chains, where multiple actors may apply inconsistent assumptions. This diminishes transparency and traceability, complicating verification and stakeholder trust (Stevens, 2018). These issues result in considerable uncertainty in reported emissions, sometimes yielding counter-intuitive outcomes, such as more precise data leading to higher reported emissions. Inconsistent practices weaken comparability, as organisations operating under similar conditions may report vastly different figures. This un- dermines benchmarking and the credibility of environmental claims (Stevens, 2018; Ehrler et al., 2016). • Technological limitations Reliable transport emissions calculation depends on coordinated data sharing across the supply chain, but integration remains limited. As no single actor has all the necessary information, collaboration is essential to generate reliable estimates on shipment level (Dobers et al., 2019). A major barrier lies in the lack of interoperability between systems. Despite the widespread use of digital tools such as telematics, fuel receipts, and third-party platforms, data is often stored in incompatible formats (Freitas and Gervásio, 2024; Plassmann et al., 2010). Within organisations, disconnected operational and ad- ministrative systems further fragment data flow, while between companies, digital ecosystems lack standardisation (Kühne Logistics University, 2024b). Finger and Serafimova (2021) highlight that data exchange is frequently constrained at both the intra- and inter-organisational levels. They emphasise the need for stronger collaboration mechanisms, citing promising examples, such as partnerships between vehicle manufacturers and operators to access real-time data. Workshop participants echoed this view, suggesting regulatory measures to require original equipment manufacturers (OEMs) to share relevant vehicle data. A harmonised framework for secure and standardised data exchange was identified as a key enabler. However, implementing comprehensive data systems is resource intensive. Data retrieval, validation, and integration require multiple iterations and quality checks. These efforts require significant investments in time, personnel, and technology, making it challenging for companies, particularly SMEs, to adopt robust tracking solutions (Dobers et al., 2019). 16 2. Theory 2.3.3 Data Sharing and Collection Table 2.5 presents challenges identified in the literature, categorised here as chal- lenges with data sharing and collection. The remainder of this section provides a more detailed description of these challenges and their implications. Table 2.5: Data Sharing and Collection Challenges from Literature Challenge Description Lack of trust and collaboration • Emissions data is seen as commercially sensitive and confidential • Fear of negative exposure discourages transparency • Low collaboration across supply chain actors Limited data collection capabilities • Many small carriers lack capacity to collect and report emissions data • Emissions accounting is seen as complex and costly • Limited demand and few financial incentives discourage investments • Lack of trust and collaboration A major barrier to the availability of emissions data is the lack of trust among supply chain actors, particularly in the sharing of operational and emissions-related data. Although primary data, such as fuel or energy consumption, is considered the most accurate input for emissions calculation, access to this information often requires insight into operational processes that transport service providers are reluctant to share (European Parliament, 2023). This reluctance is mentioned to stem from con- cerns over data confidentiality. Ehrler et al. (2016) and European Parliament (2023) emphasise that sharing activity-based data can conflict with company confidential- ity policies, as it can reveal sensitive information on fuel usage, cost structures, and operational performance. Kühne Logistics University (2024b) and Ehrler et al. (2016) also report that emission data is widely viewed as commercially sensitive, preventing providers from sharing it with regulators, industry groups, or reporting platforms. Importantly, this challenge is not exclusive to smaller companies. Although large companies typically struggle with issues of data completeness and system integra- tion, SMEs face more fundamental challenges, such as limited capabilities and in- creased concerns about competitive exposure. Due to their smaller size and weaker market positions, SMEs perceive a greater risk of sharing detailed operational data 17 2. Theory (European Parliament, 2023). Despite these concerns, several authors argue that confidentiality should not out- weigh the need for transparency. Dobers et al. (2019) advocate prioritising emissions data exchange, noting that withholding such information undermines sector-wide efforts to improve data quality and comparability. Without trust and collabora- tion, companies often fall back on default values, perpetuating low data availability, quality and limited emissions insight (Finger and Serafimova, 2021; European Par- liament, 2023). • Limited data collection capabilities A core barrier to emissions data collection and reporting lies in the structure of the land-based transport sector, which is dominated by a large number of SMEs. This fragmentation creates a competitive environment with low margins, limiting the resources available for investments in emissions tracking systems (Finger and Serafimova, 2021). Several studies highlight the capacity gap between smaller operators. Finger and Serafimova (2021) report that 43% of 800 SMEs surveyed lacked any emission mea- surement capabilities, while only 25% could measure emissions at the customer level. The remainder reported only company-level measurements. Kühne Logistics University (2024a) similarly found a strong correlation between fleet size and data capability: 60% of carriers with fewer than 10 vehicles were unable to measure emis- sions, compared to only 20% among those with fleets consisting of more than 100 vehicles. These figures underscore the difficulty of mandating detailed emissions reporting in the sector (Finger and Serafimova, 2021). However, involving these actors in the development of future reporting regulations is crucial to achieving EU climate targets, given their numerical dominance and their pivotal role in transport chains (Kühne Logistics University, 2024a). The perception that emissions accounting is complex and costly further discour- ages adoption, particularly among SMEs. Data calculation often requires combin- ing information from multiple systems, databases, and calculation models. Smaller companies typically lack the personnel, expertise, or digital infrastructure needed to manage these tasks (European Parliament, 2023). Financial incentives also play a role in shaping company priorities. EUR-Lex (2020) note that in the absence of market-based rewards, such as tax incentives or sustainability-linked financing, many companies deprioritise emission tracking, especially when not legally required. Without a clear return on investment, emissions reporting is often seen as a cost rather than a value-adding activity. In addition, complex structures further increase resource demands. Larger transport service providers may rely on multiple subcon- tractors, each with their own data practices, formats, and assumptions. Internal organisational structures and the complexity of global operations further compli- cate data sharing between departments and subsidiaries, with regional disparities in data maturity (Stevens, 2018). In contrast, a small carrier that works with multiple carriers may face conflicting data demands, resulting in a variety of method and for- 18 2. Theory mat requirements from their multitude of customers (European Parliament, 2023). Another barrier to data collection and data sharing is the limited demand for emis- sion data from customers. Finger and Serafimova (2021) report that many transport service providers do not collect or share emission data simply because it is not re- quested. In one study by Kühne Logistics University (2024a), 76% of the carriers stated that fewer than 10% of their customers requested GHG-related data. Since customer demand is a key driver of emissions reporting (see Section 2.2), this lim- ited interest contributes to a low engagement among providers. Although integrating emissions criteria into procurement processes could help incentivise data sharing, en- vironmental performance still ranks below cost in most purchasing decisions (Finger and Serafimova, 2021). Without clear market signals or commercial advantages re- lated to emissions transparency, providers deprioritise such efforts (Kühne Logistics University, 2024a). 2.4 The Need for Accurate Data This section outlines why accurate data are essential for reliable emissions report- ing in the transport sector. It begins by explaining the different data categories defined in ISO 14083, primary, modelled, and default data, and highlights the im- portance of using primary data whenever possible. The section then describes how GHG emission factors are used in calculations, including the challenges posed by variation between countries and methodologies. Finally, it presents key operational parameters that significantly influence emission estimates, such as load factor, ve- hicle type, and transport distance, and discusses how assumptions about these can lead to major deviations in reported emissions. 2.4.1 Data Categories Emission calculations in the transport sector rely on two primary data categories, primary and secondary data (International Organization for Standardization, 2023). Secondary data includes both modelled and default data and do not meet the criteria required for primary data. International Organization for Standardization (2023) emphasises that primary data is the preferred input, as it is derived from direct measurements and is therefore expected to give more accurate results. This data should be possible to obtain from the transport operator or carrier. International Organization for Standardization (2023) defines the different data types as; • Primary data: “quantified value of a process [...] or an activity obtained from a direct measurement or a calculation based on direct measurements”, • Modelled data: “data established by use of a model that takes into account primary data [...] and/or greenhouse gas (GHG) emission-relevant parameters 19 2. Theory of a transport operation [...] or hub operation [...]”, • Default data: “secondary data [...] value drawn from a published source”, • Secondary data: “data which do not fulfil the requirements for primary data [...]”. (International Organization for Standardization, 2023). Secondary data include modelled or default data and therefore do not meet the re- quirements for primary data (CLECAT, 2024). Modelled data are processed, struc- tured, or created based on a model. Meaning it is a representation of reality based on assumptions, calculations, or simulations (SAP SE, 2024). For transparency and verifiability, models and data sources should be thoroughly documented (CLECAT, 2024). Default data are typically used when neither primary nor modelled data is available. It is a predefined estimate or standard value and is retrieved from ex- isting databases, industry standards, or standard/preset values. Although default data simplifies the reporting process, especially for activities with low importance of emission, they vary in quality. Some default values are broad approximations, while others are based on robust empirical data. The closer these values are to ac- tual operational conditions, the more reliable they become for emission estimation (CLECAT, 2024). Although primary data are generally considered the most precise, their accuracy still depends on how they are collected, processed, and verified. Likewise, default emis- sion intensities, despite being standardised, may fail to reflect real-world scenarios. For this reason, transparency regarding data sourcing, modelling assumptions, and verification processes is essential. Clearly revealing how emissions are calculated not only improves trust in the results but also improves the comparability and credibility of sustainability disclosures (International Organization for Standardization, 2023). 2.4.2 GHG Emission Factors GHG emission factors are coefficients used to convert energy consumption and re- frigerant leakage into quantifiable GHG emissions (International Organization for Standardization, 2023; CLECAT, 2024; Smart Freight Centre, 2024). These factors form the basis of emissions calculations, enabling organisations to translate opera- tional data into measurable climate impacts. Emission factors for energy carriers incorporate both upstream and operational emissions, covering the entire energy lifecycle, whereas refrigerant factors typically capture emissions only from the oper- ational phase. To ensure accurate results, each transport activity must be linked to a specific emission factor that corresponds to the relevant energy carrier or refrigerant. The variability in emission factors can be attributed to several contextual variables, such as the energy source’s origin, production method, and the characteristics of the local consumption environment. National emission factors are often tailored to local conditions, including average temperatures, the regional electricity grid mix, typi- cal vehicle technologies, and fuel types, to improve comparability within national 20 2. Theory borders. However, this localisation may hinder global reporting efforts. For multi- national logistics operators, differences in national methodologies and calculation assumptions create significant challenges for producing consistent and comparable emissions data. Discrepancies also persist due to the varied approaches taken by different stakeholders when establishing emission factors. Some emission factors conform to ISO 14083 by accounting for WTT emissions, while others capture only TTW emissions. This distinction affects the comprehensiveness of the emissions inventory. Given these variations, several authors underscore the need for trans- parent, reliable, and standardised emission factors (International Organization for Standardization, 2023; CLECAT, 2024; Kioutsioukis et al., 2004; EUR-Lex, 2020). 2.4.3 Impact of Input Parameters on Emissions Greenhouse gas (GHG) emissions from transport are typically calculated using a well-to-wheel (WTW) approach, as defined by International Organization for Stan- dardization (2023) and Smart Freight Centre (2024). This methodology encompasses both direct and indirect emissions and is divided into two components: well-to-tank (WTT), which includes emissions from energy production and distribution up to the fuelling point, and tank-to-wheel (TTW), which includes emissions from the actual operation of the vehicle or vessel. See figure 2.1. Figure 2.1: Visualisation of the WTT + TTW = WTW calculation As emissions are calculated based on the energy consumed throughout the entire transport chain, several operational and contextual parameters become critical for accurate results. Both ISO 14083 and the GLEC Framework recommend including emissions from all legs of the transport chain, including return or empty trips, and calculating them using a tonne-kilometre unit, which requires data on cargo mass and distance transported. International Organization for Standardization (2023) and EcoTransIT World (2024) identify the most influential factors that affect GHG emission, as shown in Table 2.6: 21 2. Theory Table 2.6: List of key parameters for determining GHG emissions Category Parameter Details Vehicle/Vessel Type Ship type, freight/passenger aircraft Size and weight Payload capacity, motor concept, en- ergy, transmission Operational Capacity utilisation Load factor, empty trips Cargo specification Mass-limited, volume-limited, general cargo, pallets, container Driving Conditions Conditions Number of stops, speed, acceleration, air/water resistance Traffic Route Route Road category, rail/waterway class, curves, gradient, flight distance Freight Details Weight Total weight of freight Distance Transport distance While these parameters are essential for accurate emission calculations, they are of- ten difficult to obtain. As discussed in the section on data types (see Section 2.4.1), many companies lack access to detailed primary data and instead rely on secondary sources. This introduces uncertainty because assumptions must be made about key variables, which might have a substantial impact on emission outcomes. An impact- ing parameter is the load factor, the ratio of cargo transported to available transport capacity. Calculating the load factor is complex and varies between stakeholders. It may be defined based on pallets, volume, weight, volumetric weight or shipping weight, each producing different results (Wang et al., 2022). These variations can have significant consequences. For example, calculating the load factor is vastly complicated and the methods differ between different stakeholders. (Wang et al., 2022). These differences give large effects. For example, reducing the assumed load factor from 100% to 20% can result in an increase in emissions of more than 260% per transported unit (Smart Freight Centre, 2024). Therefore, although the calculation methodology is standardised, the quality of the input data plays a decisive role. Inaccurate assumptions can lead to an overesti- mation or underestimation of emissions, reducing the credibility and comparability of sustainability reports. Thus, it is crucial for companies to ensure that secondary data are as representative of actual transport conditions as possible and to document all assumptions transparently. 22 3 Methods This study aim to explore the challenges and barriers associated with the collec- tion and sharing of transport emission data among transport service providers and buyers within the transport chain. To address this, a multiple case study design was employed. The study relied on primary and secondary data. Primary data were collected through semi-structured interviews, while secondary data, drawn from sus- tainability reports, company information, and academic literature, served to con- textualise and complement empirical findings. 3.1 Empirical research The research was carried out in collaboration with Centiro, a company operating in the logistics sector. The authors initially approached Centiro with a proposed research topic, which was refined through a series of exploratory interviews and workshops. The final topic was mutually agreed on, aligning with Centiro’s opera- tional expertise and offering a valuable context for accessing professional knowledge relevant to the study. More details about the company are provided in section 3.3. A qualitative, inductive approach guided the concept development, with the study primarily built on empirical data. 19 semi-structured interviews were conducted with selected companies to investigate the current practices and challenges connected to collection and exchange of emissions data. These challenges were analysed from the perspectives of different stakeholder roles in the value chain, taking into account differences based on stakeholder position and organisational characteristics. 3.1.1 Secondary Data The study began with a review of secondary data related to existing and emerging regulations and frameworks that govern the reporting of transport emissions. This provided an overview of the regulatory landscape and the expectations placed on companies. The review focused on official sources such as the European Commis- sion, European Parliament, and EFRAG (European Financial Reporting Advisory Group), as well as industry organisations such as the Smart Freight Centre and international standardisation bodies such as ISO and SIS (Swedish Standards Insti- tute). These sources were deemed reliable given their relevance and wide application in the sector. 23 3. Methods Google was primarily used to locate regulatory content, as such materials are more commonly published on institutional websites than in academic journals. Scopus and Google Scholar were used to identify academic studies that address the impli- cations of these regulations and methodologies for the calculation of emission. The most used search terms: • ISO 14083 • ISO 14064 • CSRD • Emission Data • Transport Emission Calculation • Transport Emission Reporting • Logistic Emission Calculation • Emission Calculation Methodology Additional search terms were used to ensure the inclusion of relevant literature sup- porting the research objectives. Since the CSRD directive was introduced in 2021 and finalised in 2022, sources published from 2021 onward were prioritised to capture contemporary insights and early implementation experiences. As recently published sources as possible were preferred, as they are likely to include more insights and empirical experiences from the market, rather than merely forecasts or potential challenges. Regarding the calculation of transport emissions, the publication date was deemed to not impact the reliability. Although more current research were important, to understand how current regulations and frameworks recommend the calculation of emissions, the underlying principles and definitions used often build on previous research within the field. Therefore, older sources were also considered valuable, given the continuity in underlying theoretical frameworks, and provided that they were of sufficient quality. Prior to each interview, sustainability reports and general company information were reviewed to tailor questions to each participant’s organisational context. This preparatory step enabled more targeted and relevant discussions, strengthening the overall quality of the interviews. 3.1.2 Interviews To address the purpose of this study, semi-structured interviews were conducted with stakeholders in the transport chain. This method offered both structure and flexibility, enabling consistency across interviews while allowing interviewees to elab- orate and introduce new perspectives. Each interview lasted approximately 45–60 minutes, which provided enough time to explore the subject in depth, while main- taining a clear structure aligned with our research questions. The interviewees received an advance copy of the interview guide, a background sum- mary, and the study’s objectives. This preparation allowed participants to nominate 24 3. Methods the most suitable respondent within their organisation. Typically, a representative participated per company, though their roles varied, ranging from sustainability and procurement to data analysis. In some cases, the roles were even more diverse, de- pending on how the responsibilities were distributed within the organisation. These variations influenced the responses to some questions, as the participants had dif- ferent levels of insight into specific areas. When participants were unable to answer certain questions due to role limitations, this was taken into account in the anal- ysis and interpretation of the results. In some interviews, multiple representatives with different roles participated. The diversity of roles enriched the discussion and provided more comprehensive answers. In addition, obtaining varying perspectives increased the likelihood that all questions could be answered more thoroughly, since participants were able to complement each other’s knowledge and provide more in- depth information. Semi-structured interviews are widely used in qualitative research because they are based on open-ended pre-defined questions, enabling the researcher to guide the conversation while still allowing the respondents to elaborate on their thoughts and introduce new perspectives (DiCicco-Bloom and Crabtree, 2006). This format is particularly useful in this type of study, where practices and challenges may vary across actors, and where the goal is to explore both shared and divergent expe- riences. The use of a semi-structured interview guide ensured that all interviews addressed the key research themes systematically, while allowing space for further follow-up questions (DiCicco-Bloom and Crabtree, 2006). The interview guides used for transport buyers and transport service providers are included in Appendix 1 and Appendix 2. Additionally, semi-structured interviews offer a practical advantage in that they can be conducted in a single session, making them well-suited for professionals with limited availability (DiCicco-Bloom and Crabtree, 2006). This was particularly im- portant in our study, as several participants held time-constrained roles and were unable to commit to more extensive participation. The majority of interviews were conducted remotely, with only two held in person. This choice improved efficiency given the wide geographical distribution of participants, spanning across Sweden and Denmark, and the time limitations of the project. No noticeable difference in quality or depth was observed between remote and in-person interviews, and there- fore no separation of the results based on interview format was made. Alternative formats of interviews were considered, but ultimately excluded. Unstruc- tured interviews, for example, are better suited for long-term research, resembling informal conversations, lacking the consistency needed to address specific research questions in a focused way, making it harder to compare responses between partic- ipants (Corbin and Morse, 2003; Gray, 2009). Non-directive or informal conversa- tional interviews, which involve spontaneously generated questions, were also ruled out, as they risk drifting too far from the core themes and reducing the compara- bility between interviews (Gray, 2009). 25 3. Methods In contrast, the semi-structured format provided a strong balance between depth and comparability, facilitating the collection of rich empirical data while maintaining coherence between interviews (DiCicco-Bloom and Crabtree, 2006). This method proved effective for identifying the range of experiences and perceptions related to emission data collection and sharing in transport chains. 3.2 Company Selection and Study Implications This section presents the selection of the companies included in the study and out- lines the rationale for their inclusion. A brief description of the operations of each company is provided to give context to their role within the transport and logistics sector. Each section also discusses how the selection of the specific companies may have influenced the study and its results. In this study, we have chosen to anonymise all interviewed companies, even though all but one, gave their consent to be named in the report. This decision was made to ensure equal treatment between all participants and create a safe space that encour- ages openness and honesty in descriptions. By treating all interviews confidentially, we minimise the risk that sensitive or critical information could be linked to a spe- cific organisation. The companies are therefore referred to using code names (e.g., GlobalFreight, LocalHaulier and BioIndustry) to preserve anonymity while retaining relevant contextual information. 3.2.1 Transport Buyers In selecting interview participants from the category of transport buyers, the main objective was to include large companies subject to the CSRD. These companies were expected to have experience with the collection, management and report- ing of transport-related emissions data, making them particularly relevant for the study’s focus on practical challenges and barriers. To ensure broader representation, the sample also included companies not currently covered by CSRD requirements, such as TechDistributor, which does not meet the size thresholds, and Forrester, a member-owned company not legally obliged to report under the directive. These organisations were included to explore how smaller or differently structured compa- nies handle emission data, particularly when indirectly pressured by customers or market expectations. It was assumed that such companies may still face growing demands for emissions data, especially from clients with their own reporting obli- gations. Their inclusion offered valuable insights into challenges experienced under different conditions, such as reduced bargaining power with suppliers or fewer inter- nal resources for sustainability reporting. The selection of companies also deliberately aimed to include a range of industries. The final sample included product manufacturers, trading firms, and service-oriented companies. This diversity was intended to avoid sector bias and better reflect the variation in industry norms, customer demands, and regulatory pressures that in- fluence how companies approach sustainability. By engaging organisations across 26 3. Methods multiple sectors, the study sought to identify both common patterns and industry- specific challenges, thereby enhancing the generalisability of the findings. Participants were identified through multiple channels. For transport buyers, a majority of contacts were made through Chalmers’ career fair, where the authors actively sought out representatives in relevant roles. Additional interviewees were found through network contacts. Some contact information was also provided by Centiro, helping to establish a connection with a key stakeholder. This combination of outreach methods was essential in securing a diverse set of interviewees under the time constraints of the study. While this approach enabled access to a broad range of perspectives, it also had limitations. The heterogeneity of the companies, in terms of size, industry, owner- ship, and regulatory exposure, can limit the comparability of results. Furthermore, companies with more advanced sustainability initiatives may be overrepresented, as they were more likely to respond to outreach and have staff capable of address- ing emissions-related questions in detail. Nonetheless, this variety is believed to have provided a more comprehensive view of market conditions and to have helped identify both shared and context-specific challenges. The resulting insights offer a balanced understanding of the reporting landscape for transport emissions across different types of organisations. A thematic analysis was conducted to structure the results by identifying recurring patterns and themes in the collected data. This method was chosen as it allows for a systematic approach to analyse qualitative material and provide deeper insight into complex issues (Naeem et al., 2023). Table 3.1: Interviewed Transport Buyers Company Role of Interviewee Transport Modes Size Geographical Range MedTech Customer Relationship Manager • Air • Maritime • Rail • Road Large Global TechDistributor Logistics Specialist, Sustainability Coordinator • Air • Maritime • Road Medium Global AeroManufacturer Environmental Sustainability Lead • Air • Maritime • Rail • Road Large Global (Continued on next page) 27 3. Methods (Continued from previous page) Company Role of Interviewee Transport Modes Size Geographical range TruckOEM Supply Chain Sustainability Controller • Air • Maritime • Rail • Road Large Global Recycler Logistics Developer • Maritime • Rail • Road Medium Nordics Forrester Quality and Compliance Manager • Maritime • Rail • Road Medium Nordics AutoOEM Sustainability Leader, Purchasing Analyst • Air • Maritime • Rail • Road Large Global WholesaleDistributor Transport Manager • Air • Maritime • Rail • Road Medium Nordics 3.2.2 Transport Service Providers In selecting transport service providers for this study, we initially prioritised larger companies, based on the assumption that these organisations would possess more es- tablished processes for emissions data management and allocate greater resources to sustainability reporting. However, early interviews with transport buyers revealed the crucial role played by smaller hauliers, often operating fewer than ten vehicles, within many transport chains. These smaller actors are frequently subcontracted by larger transport providers, freight forwarders, third-party logistics providers (3PLs), and end customers. Their central role adds complexity to both data flows and the overall structure of the value chain. Figure 3.1 presents our conceptualisation of the hierarchy typically found in land-based transport supply chains. The figure illus- trates the layered subcontracting relationships, with smaller carriers positioned at the base, operating under larger logistics providers and intermediaries. Blue arrows indicate one-way contractual relationships, while red arrows represent two-fold rela- tionships, where an actor may both contract others and be contracted themselves. To reflect this structure and gain a more comprehensive understanding of the sec- tor, we sought to include the perspectives of smaller transport companies. Engaging with smaller hauliers proved challenging, as these companies often lacked the time or capacity to participate in interviews. In several instances, our outreach efforts received no response. To address this, we interviewed representatives from trans- 28 3. Methods port cooperatives and industry associations such as LocalHaulier2, LocalHaulier3, LocalHaulier1, and IndustryOrg. These organisations, which support their member hauliers in operational matters but do not operate fleets themselves, offered valuable insights into the conditions and data-related challenges faced by smaller carriers, in- sights that would otherwise have been difficult to obtain. Figure 3.1: Conceptualisation of transport structure and relations Participants were identified through a combination of outreach strategies. The ma- jority of transport providers were contacted via LinkedIn, where we targeted indi- viduals in relevant roles. Additional contacts were established through Centiro, the supporting company in this study, and one interview was arranged through direct email. This varied approach was instrumental in securing a diverse set of partici- pants within the time constraints of the research. Consistent with the study’s purpose, no specific transport mode was prioritised. Instead, the sample included companies operating across multiple modes to reflect the diversity of the sector. For example, GlobalShipping and PublicTransporter contributed insights related to ocean and public transport, respectively. Several companies, including ParcelCarrier and GlobalFreight1, operated multimodal net- works that combined road, rail, ocean, and air freight. While this provided a more comprehensive understanding of emissions data challenges across transport modes, it is important to note that none of the companies interviewed directly operated rail or air transport services. Rather, these services were procured from third parties. As such, the findings related to rail and air modes are based on the perspective of 29 3. Methods transport buyers, rather than operators, which may limit the depth of insight into the specific challenges of these segments. The included providers also represented a range of operational contexts. A few fo- cused on parcel delivery and last-mile logistics, while others were involved in large- scale freight transport for construction or industrial sectors. This diversity enabled the study to explore how emissions data management practices vary depending on the type of cargo, transport distance, and customer demands. While the breadth of operations covered contributes to a more holistic understanding, it also limits the granularity of insights within specific transport segments, such as last-mile delivery. In summary, the selection of transport service providers facilitated a broad and rep- resentative understanding of the challenges associated with emissions data collection and reporting. Although the inclusion of larger companies and industry organisa- tions strengthened the study’s empirical base, the limited coverage of rail and air operators and the broad scope of transport operations constitute limitations that should be considered when interpreting the findings. Table 3.2: Interviewed Transport Service Providers Company Role of Interviewee Transport Modes Size Geographical Range ParcelCarrier Sustainability Manager • Air • Maritime • Rail • Road Medium Europe GlobalFreight1 Sustainability Specialist • Air • Maritime • Rail • Road Large Global GlobalFreight2 Sustainability Director • Air • Maritime • Rail • Road Large Global LocalHaulier1 Vice CEO & Head of Distribution and Crane • Road Small Sweden LocalHaulier2 Sustainability Manager, Head of Business Development for Thermo and Distribution • Road Small Sweden GlobalShipping Senior GHG Emissions Specialist • Air • Maritime • Rail • Road Large Global (Continued on next page) 30 3. Methods (Continued from previous page) Company Role of Interviewee Transport Modes Size Geographical range LocalHaulier3 CEO • Road Small Sweden Nordic3PL Sustainability Manager • Air • Maritime • Rail • Road Medium Nordics IndustryOrg Technology Specialist, Sustainability Manager, Industry Representative • Road N/A Sweden Speditor Business Developer • Air • Maritime • Rail • Road Medium Global PublicTransporter Sustainability Manager • Road • Maritime Medium Sweden 3.3 Centiro Centiro is a Swedish technology company headquartered in Borås, founded in 1998. The company specialises in developing cloud-based solutions that support the man- agement of goods flows in e-commerce, logistics, and industrial operations. Through its software platforms, Centiro helps businesses connect and optimise their delivery and service networks. These solutions enable more efficient transport operations, improved customer experiences, and real-time handling of complex logistics flows. In this study, Centiro has been both a collaboration partner and a knowledge re- source. At the initial stage of the project, representatives from Centiro participated in exploratory discussions with the authors to define the overall research direction and formulate the study’s focus. Leveraging their industry expertise and familiarity with emerging challenges in the logistics sector, Centiro played an active role in refining the study’s purpose and shaping the final research questions. Centiro also contributed to the theoretical groundwork by helping to identify relevant regulatory frameworks and current developments in transport emissions reporting. In addition, the company provided valuable support in the data collection process by facilitating contact with potential interview participants. This enabled the inclusion of diverse perspectives from both transport buyers and transport service providers. Through- out the course of the study, preliminary findings and analytical reflections were continuously shared with Centiro. Their feedback not only strengthened the practi- cal relevance of the study but also ensured that the research remained grounded in the operational realities of the industry. 31 3. Methods 32 4 Result This chapter presents a structured synthesis of the empirical findings derived from interviews with both transport service buyers and transport service providers. The results are illustrated with selected quotations from the interview transcripts to sup- port interpretation and authenticity. To address the study’s objective of identifying challenges in collecting, and sharing transport emission data, a thematic analysis was conducted. As summarised in Table 4.1, the chapter is organised into four main sections. It begins by outlining key barriers and challenges, followed by an overview of current sustainability reporting practices and transport chain structures to pro- vide the necessary context. The subsequent sections explore the identified drivers that incentivise emissions reporting and conclude with a presentation of enablers that could facilitate improved data transparency and reporting accuracy. Three overarching categories of challenges were identified: organisational and method- ological barriers, issues related to data quality and availability, and difficulties sur- rounding data sharing and collection. In parallel, both internal and external drivers for emissions reporting were recognised, ranging from regulatory compliance to com- mercial incentives. Finally, the study identified several enablers, including digital- isation, standardisation, and collaboration mechanisms, that have the potential to support enhanced emission visibility. In this framework, barriers and challenges refer to factors that obstruct the flow and visibility of emission data across supply chains. Drivers represent motivating forces that motivate organisations to engage in emissions reporting and data exchange. Enablers, while not prerequisites for reporting, are elements that facilitate better alignment with standards such as ISO 14083. Their absence does not necessarily prevent emissions reporting, but often leads to reliance on less accurate forms of data, such as secondary sources rather than primary sources. This structure aims to clarify the nature of existing obstacles, the motivations to address them, and the mechanisms through which more transparent and standard- ised reporting practices could be achieved. 33 4. Result Table 4.1: Overview of Themes and Associated Challenges Theme Challenges Barriers and Challenges • 4.1.1 Organisational and Methodological Barriers • 4.1.2 Data Quality and Availability • 4.1.3 Data Sharing and Collection Drivers • 4.2.1 External drivers • 4.2.2 Internal drivers Enablers • 4.3.1 Technological Solutions and Standardisations • 4.3.2 Collaborative practices 4.1 Barriers and Challenges This section presents the principal barriers and challenges identified through the in- terviews, structured around three thematic areas: organisational and methodological barriers, data quality and availability, and data sharing and collection. Each theme is further divided into specific challenges, which are elaborated through narrative analysis and supported by illustrative quotations from respondents. 4.1.1 Organisational and Methodological Barriers Table 4.2 summarises the organisational and methodological barriers reported by interview participants. These challenges reflect limitations in internal coordination, strategic prioritisation, and understanding of emissions calculation methodologies across both transport buyers and service providers. Table 4.2: Organisational and Methodological Barriers Challenge Description Fragmented organisational structures and communication • Decentralised procurement complicates emission tracking • Lack of internal coordination between sustainability and operations teams (Continued on next page) 34 4. Result (Continued from previous page) Challenge Description Low strategic prioritisation of transport emissions • Cost is prioritised over sustainability • Limited resources for emissions data management internally Lack of understanding of methodologies • Confusion regarding required data types and input parameters • Uncertainty about allocation methods • Inconsistent calculation approaches across companies • Limited internal knowledge of emissions modelling • Fragmented organisational structures and communication As shown in Tables 3.1 and 3.2, the interviewees held a diverse set of roles, including sustainability managers, logistics specialists, procurement professionals, and quality coordinators. A key observation made by the researchers was the noticeable dis- connect between those responsible for emissions reporting and those tasked with operational data collection. While sustainability teams frequently perceived data availability as adequate, individuals working closer to day-to-day operations de- scribed the process as challenging, often citing difficulties in accessing accurate, complete, and consistent data. This disconnect was also identified and described by LocalHaulier2: "We should also note that often those of us in logistics talk to logistics people. (...) You can see that CSRD, it is something that the quality departments are doing. The people I talk to do not know what it means.". Several organisations noted that complex, decentralised structures, particularly in global operations, hindered emissions data visibility and coherence. At AeroManu- facturer, fragmented procurement processes and organisational complexity presented a substantial challenge: "Since we are such a big company with so many different locations with such complex business structures, even for us to just know who do we work with where and what constellations (...). To organise all of that and to have a structured approach to collecting and calculating data is still a major challenge.". Similarly, MedTech described the difficulty of aligning data systems across global and local teams: "There has been demands for much, much more detailed data and in such an extremely large organisation like MedTech, some data may not be shared as much. So, the global functions may be sitting on certain data that may be com- plete, but then we in Sweden may not get all the data or do not even know that it exists. Currently, we are synchronising data usage so that everyone uses the same data.". 35 4. Result In summary, organisational fragmentation, both vertically between strategic and operational levels and horizontally across departments and geographic locations, emerged as a key internal barrier to reliable emissions reporting. Addressing these structural and communication gaps is a prerequisite for enabling consistent and ver- ifiable emission data management. • Low strategic prioritisation of transport emissions The interviews revealed substantial variation in how companies organise and pri- oritise their sustainability work, particularly regarding emissions reporting. Not all participating companies report according to regulatory frameworks, often due to exemptions related to size or ownership structure. Nevertheless, some companies chose to voluntarily align with such standards as a demonstration of environmental responsibility. For example, Forrester will begin to report in accordance with the CSRD, despite not being formally obliged to do so. An observation in the interviews was the relationship between regulatory exposure and the maturity of sustainability practices. Companies subject to mandatory reporting obligations typically demon- strated a more developed understanding of emission scopes, data categorisation, and pursued a higher degree of granularity in their data collection. Additionally, the duration of a company’s engagement in sustainability reporting appeared to influ- ence the institutionalisation of routines. Organisations with a longer history in this domain generally had more formalised processes and internal structures, whereas those newer to emissions reporting described difficulties in establishing consistent data flows. In most companies, the main strategic focus was on reducing emissions rather than improving access to emissions data. This was especially true for transport buy- ers, whose emissions are mostly caused by other parts of their operations, not by transport. In contrast, transport service providers emphasised that limited customer interest constrained their ability to prioritise and invest in both emissions reduction, and data collection, despite interest in more sustainable solutions. A central theme emerging from the interviews was the prevailing cost pressure in the logistics sector, particularly in transactions between transport buyers and service providers. Many respondents noted that sustainability considerations were frequently deprioritised in favour of cost-efficiency and delivery performance. This was clearly articulated by LocalHaulier2: "But it is about saving money, shipping costs, delivery quality, delivery precision. That is what customers want." and "Many in an organisation see logistics as a necessary evil. It does not generate money, it only costs money.". Despite this, some transport service providers expressed a proactive approach, aim- ing to position themselves competitively through environmental branding. As Lo- calHaulier1 noted: "We want to have a strong environmental profile with our vehicles all the time. Because we believe that it will get us more jobs.". However, for smaller hauliers operating under tight financial margins, such efforts were often infeasible without clear commercial benefits or customer demands. This was underscored by IndustryOrg: "There must be a logic to what problems to solve. (...) I think it has to 36 4. Result become part of the business more than anything else. Then I think that competence will come with it.". Similarly, Speditor explained that transportation is often perceived as a background function that is expected to operate seamlessly, which contributes to the low prioriti- zation of emission data among their customers: "For customers transport is probably a question of price and lead time. It easily becomes a function that should just work, and you may not put much thought into how to do it or who to do it with. (...) The customers might not spend as much time on the environmental aspects.". A lack of strategic integration was also noted on the buyer side, particularly in translating emissions data into actionable business intelligence. AeroManufacturer articulated this challenge: "Another challenge is how to use the information [the transport data] – to formulate a strategy around it, and embed it in the business strategy, to get the support from top management. Because we are talking absolute emission reductions while the company wants to grow. So how do you do that? To use the emissions data and translate it to something that business people understand and take decisions on, which usually is financial data.". These findings suggest that low strategic prioritisation of transport emissions, both in terms of data collection and internal integration, significantly limits the availabil- ity and quality of emissions data. For service providers, the absence of customer- driven incentives reduces the return on investment in sustainable practices. For buyers, the lack of internal prioritisation hinders the potential for data to inform improvement initiatives and support long-term emission reduction strategies. A recurring barrier identified across both transport buyers and service providers was the lack of clarity surrounding emission calculation methodologies. While most interviewees expressed confidence in their chosen approaches, often viewing their results as valid within their operational context, closer examination revealed diver- gent interpretations of core methodological concepts. Specifically, inconsistencies were observed in how companies applie