Document Title UN R51: Proposal for Supplement 11 to the 03 series of amendments
Reference Number GRBP-83-41
Date
11 Feb 2026
Summary Proposal to supersede document GRBP/2026/4 intended to introduce a “default mode”, to specify requirements to be applied to the emission of Enhanced Exterior Sound (EES), with corresponding transitional provisions, and to draw a limit curve to introduce electric vehicles and hybrid electric vehicles that can be propelled without an internal combustion engine operating in the scope of ASEP (Annex 7).
Source(s) OICA
Rulemaking Area(s) UN R51 Vehicle Noise
Regulatory Impact
03 series of amendments | Supplement 11
Proposal Status Formal GR review
Meeting(s)
Related Documents
GRBP/2026/4 UN R51: Proposal for a Supplement 11 to the 03 series of amendments | Formal GR review supersede?
Downloads
UNECE server .pdf format .docx format
GAR server .pdf format .docx format