The carbon footprint of road freight: ISO 14083 and Regulation (EU) 2026/1030

In EU law, the carbon footprint of a transport service is now a defined figure: the greenhouse gas emissions of that service, calculated with the method of EN ISO 14083:2023 and expressed in carbon dioxide equivalent (CO2e). Regulation (EU) 2026/1030, in force since 1 June 2026 and applicable from 2 December 2030, sets the rules whenever transport emissions are calculated and disclosed service by service. A disclosed figure must give at least the total CO2e of the transport service and one common metric, for road freight the mass of CO2e per tonne-kilometre.

Status: 1 October 2026. This page follows the text of Regulation (EU) 2026/1030 as published in the Official Journal on 12 May 2026, and the Commission’s news item of 1 June 2026. The ISO standard itself is sold by the standards bodies and was not read; the page describes only what the Regulation says about it.

The terms the Regulation defines

Article 2 defines the words a carbon footprint rests on:

• Greenhouse gas emission: “the release of a greenhouse gas into the atmosphere expressed in mass of carbon dioxide equivalent”.
• Carbon dioxide equivalent (CO2e): a unit for comparing the radiative forcing of a greenhouse gas to that of carbon dioxide.
• Greenhouse gas emissions accounting: the actions performed to quantify, through measurements and calculations, and used for reporting, greenhouse gas emissions.
• Transport service: transporting freight or a passenger from an origin to a destination; it can involve several transport chain elements, both transport operations and hub operations.
• Well-to-wheel greenhouse gas emissions: emissions from the use of vehicles and the operation of transport hubs, and from the provision of energy to those services.

Recital 13 says the calculation is performed on a well-to-wheel basis. Emissions from building, maintaining and disposing of vehicles, or from infrastructure, are part of a life-cycle assessment, which the Regulation does not require (recital 15); in its evaluation, due by 3 December 2034, the Commission is to assess whether the method could also account for emissions from vehicle production, maintenance and disposal (Article 19).

What the Regulation covers

Article 1 sets the scope: the greenhouse gas emissions accounting of transport services that start or end on Union territory, where disaggregated information on those emissions is calculated and disclosed, on a contractual or voluntary basis for commercial purposes, or where Union or national law requires the calculation and disclosure. It applies to:

• transport operators, transport service organisers and hub operators;
• data intermediaries, who provide emissions information on transport services without providing or organising them;
• developers of calculation tools;
• developers of third-party databases;
• conformity assessment bodies.

According to recital 11, the Regulation does not apply where emissions are calculated and disclosed in aggregated form, such as company-level sustainability reporting under Directive (EU) 2022/2464 or environmental accounts for statistics; figures calculated under the Regulation may feed such reports if the methods are compatible. The Commission’s news item describes the framework as applying to companies voluntarily disclosing transport emissions.

The method: EN ISO 14083:2023

Article 3 makes EN ISO 14083:2023, Greenhouse gases – Quantification and reporting of greenhouse gas emissions arising from transport chain operations, the common methodology, “in its updated version”. Recital 13 says the European Committee for Standardization published it in April 2023 and that the Commission’s analysis found it the most relevant and proportionate standard. The Commission is to assess by 3 December 2033 whether any component needs adjusting, may run a compliance check on amendments to the standard, and can exclude by delegated act amendments that create a manifest risk of incompatibility with the Regulation’s objectives.

Primary and secondary data

Article 4 tells transport and hub entities and data intermediaries to prioritise primary data.

• Primary data is the quantified value of a process or an activity obtained from a direct measurement or a calculation based on direct measurements.
• Secondary data is modelled data or default values that do not fulfil the requirements for primary data, including data from databases and published literature, default emission factors from national inventories, calculated data, estimates and data from proxy processes.

A Member State may make primary data compulsory for transport operations on its territory by companies whose number of employees exceeds a threshold set by national law, where the service starts and ends on its territory; it may not apply this to cross-border operations, to transit, or to SMEs. Member States may also offer incentives for primary data.

Secondary data is allowed only from specific sources:

• default emission intensities from the core Union database, which the Commission is to establish by 2 December 2029, or from third-party databases positively assessed by the Commission (that check is compulsory from 3 December 2031 and a positive assessment is valid for two years);
• default emission factors for transport energy carriers from the central Union database, to be established by 2 June 2028;
• modelled data built under the common methodology.

When companies calculate the emissions of a specific service in advance, they may use default values established from their own primary data for a similar service in the preceding year. For electricity they may use the market-based approach instead of location-based secondary data if the conditions of Annex J to the standard are met. When a database is updated, the new values must be used within 18 months for new figures; published figures need not be revised.

What a disclosed figure must contain

Under Article 9, output data consist at least of the total mass of CO2e per transport service and at least one common metric:

Article 10 asks for the figures to be disclosed clearly, whenever possible before the service is provided or the contract concluded, with the statement “Greenhouse gas emissions calculated in accordance with Regulation (EU) 2026/1030” in at least one official language of the Union institutions. Companies may also show whether the data were verified, whether only primary data were used, and whether the EU calculation tool was used. Whoever calculates must be able to show how the figures were established; where possible, figures and evidence are to be made available through a weblink, a QR code or an equivalent.

Tools and verification

• EU calculation tool. By 2 June 2030 the Commission is to adopt implementing acts so that a free, simplified EU calculation tool, designed particularly for micro, small and medium-sized transport operators, is publicly accessible, with a manual in all official languages (Article 8).
• External calculation tools sold or offered by third parties must be certified by an accredited conformity assessment body; a certificate is valid for two years (Article 11).
• Verification. Output data of companies that calculate emissions are verified by an accredited conformity assessment body, which checks the method, the input data sources, the calculation and the metrics and issues a proof of compliance. SMEs are exempt but may ask for verification (Articles 12 and 13).

Timeline

The date of entry into force follows from Article 20 (the twentieth day after publication) and matches the Commission’s news item of 1 June 2026.

Where trucks come in

The Regulation covers every mode of transport and does not single out road freight; for a truck journey the figure is the service’s total CO2e and, as a rule, CO2e per tonne-kilometre. Its text does not mention VECTO, the simulation tool used to certify the CO2 emissions and fuel consumption of new heavy vehicles, described in what is VECTO, nor the EU’s CO2 standards for new trucks, described in EU CO2 standards for trucks and buses. Recital 28 asks that access to in-vehicle data be considered in any upcoming proposal on vehicle data, to help SMEs use primary data. The separate emissions trading system for road fuels is covered in ETS2 and road transport.

What this page does not cover

• A calculator or emission factors of this site’s own.
• How to report under the Corporate Sustainability Reporting Directive.
• The carbon footprint of products or of whole companies.
• The content of EN ISO 14083:2023 beyond what the Regulation states.