Introduction
The European Agreement concerning the International Carriage of Dangerous Goods by Road (ADR) is the core rulebook for classifying, packaging, documenting, marking/labeling, loading, and moving hazardous consignments by road across its Contracting Parties. ADR is revised on a two-year cycle by the UNECE Working Party on the Transport of Dangerous Goods (WP.15). The 2025 consolidated edition incorporates amendments adopted in 2022–2024 and applies from 1 January 2025.
Who must comply and what the law expects
ADR allocates duties to all key participants – consignors, carriers and other operators – and in practice, European freight forwarders frequently coordinate these parties to ensure regulatory compliance and seamless transport. Beyond correct classification and packing, carriage must be supported by a compliant transport document and by the “instructions in writing” (IiW) carried in the cab in the fixed four-page model described in 5.4.3. Vehicle and crew equipment requirements, as well as marking of transport units with orange plates, are set out in the technical annexes.
When ADR 2025 becomes mandatory
The 2025 edition entered into force on 1 January 2025 with the usual transitional allowance until 30 June 2025; from 1 July 2025, operators are expected to work to the 2025 text unless a specific longer transition is stated inside ADR.
Key changes in ADR 2025
- New entries for sodium-ion batteries and battery-powered vehicles: UN 3551 (SODIUM-ION BATTERIES with organic electrolyte) and UN 3552 (SODIUM-ION BATTERIES PACKED WITH/CONTAINED IN EQUIPMENT), plus UN 3556–3558 for vehicles powered by lithium-ion, lithium-metal or sodium-ion batteries.
- Harmonized packaging route for small mixed laboratory wastes: new 4.1.1.5.3 allows certain small inner packagings containing different dangerous goods to be placed together in a single tested outer packaging, with a document statement “Carriage in accordance with 4.1.1.5.3.”
- Asbestos waste under Special Provision 678: allows bulk carriage in purpose-designed container-bags with two liners, requiring the document statement “Carriage under special provision 678.”
- Updated wording for vehicle electrical systems, reflecting the need to de-energize circuits and protect controls in modern fleets.
Documentation that must be in the cab
Operators must provide a paper transport document and the IiW in the vehicle, even if digital systems are used internally. The IiW must follow the fixed four-page model and be easily available to the crew for emergencies.
Training in 2025 – including Limited Quantities (LQ)
All persons whose duties concern the carriage of dangerous goods must receive training according to their responsibilities. This explicitly covers Limited Quantities movements: drivers, cross-dock staff, and administrative personnel must complete general awareness and safety training. This is critical for groupage networks handling large LQ volumes.
Marking and labeling – operational reminders
Packages and overpacks must carry the correct hazard labels and marks as listed in Table A. The new battery entries require updated label templates and procedures to ensure correct hazard communication. Transport units must display orange plates as required by load and mode.
Implications for groupage networks handling Limited Quantities
European groupage services face two key updates: battery-powered goods and waste. Sodium-ion batteries join lithium systems with their own UN numbers, so booking and screening must distinguish battery types and packaging status. The new 4.1.1.5.3 option simplifies handling of small mixed laboratory waste, while asbestos transport under SP 678 requires strict packaging and routing control.
Practical steps to stay compliant
- Update master data to include UN 3551, UN 3552, and UN 3556–3558, and ensure correct label and packing instructions.
- Add automatic statements “Carriage in accordance with 4.1.1.5.3” and “Carriage under special provision 678” where relevant.
- Refresh training programs so that Limited Quantities personnel complete Chapter 1.3 training with records available for inspection.
- Check that paper IiW and transport documents are always present and that orange plates and emergency gear comply with ADR 2025.
Where to read the official 2025 text
The official source is the UNECE ADR 2025 consolidated edition – Volume I and II. National authorities provide plain-language summaries of the main amendments. Operators should rely on these texts when updating SOPs, training, and audits.