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ECE R-111
Rollover Stability
Applies to
N, O
Topic
Braking & steering
Framework
UN ECE
Velocert services
European
Overview
UN Regulation No 111 lays down uniform provisions for the approval of tank vehicles of categories N and O with regard to rollover stability.
This summary is based on the text published on EUR-Lex in 2002. GlobalAutoRegs lists no series of amendments for this Regulation; it lists Amendment 1 (2005) and Corrigendum 1 (2009) as texts. Checked on GlobalAutoRegs, 1 November 2026. For the current text, see the UN (UNECE) page.
Scope
It applies to the rollover stability of tank vehicles of categories N2, N3, O3 and O4 intended for the carriage of dangerous goods as defined in the ADR Agreements.
The regulation applies to the following vehicle categories:
N
Goods vehicles
O
Trailers and semi-trailers
Official source
For the requirements of this regulation, refer to the official text in force and its amendments.
Official UNECE text