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What changes on 1 January 2027 — checklist for drivers

Height, road train weight, modular road trains, ADR 2027 and what is still only a proposal

2026-10-06·5 min reading

At New Year 2027, several rules for lorries and buses change at once: the height may be 4.20 m, road trains with seven axles may weigh 58 tonnes, and ADR 2027 enters into force. Here is the checklist — and the things that are still only proposals.

Introduction

WhatUp to and including 31/12/2026From 1/1/2027Source
Height: buses and lorries and their trailers (from 2027 also tractors and motorised equipment)4.10 m4.20 mExecutive Order (BEK) 1447/2025, §§ 13 and 38 (BEK 1331/2024, § 13 applies until 31/12/2026)
Road trains with seven or more axles (vehicle + trailer subject to registration)56,000 kg58,000 kgExecutive Order (BEK) 1447/2025, § 21(2)(9), and § 38(2)
Modular road train with seven axles—58,000 kgExecutive Order (BEK) 1491/2025, § 7(1)(2), and § 20(3)
ADR (dangerous goods)ADR 2025 editionADR 2027 editionUN notification C.N.252.2026

ADR 2027: the UN depositary notification of 1 July 2026 says that the amendments enter into force on 1 January 2027 unless they were rejected before 1 October 2026. A transitional period for ADR 2025 is not stated in the notification and is ⚠️ not confirmed in the primary source.

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