GAR | RDASEP-13-01/Rev.2

RDASEP-13-01/Rev.2

RD-ASEP: Agenda for the 13th (June 2026) session

Source(s)

Date

10 Jun 2026

Status

Subject

UN R51 Vehicle Noise

Meeting(s)

RDASEP | Session 13 | 10-12 Jun

The agenda includes discussion of Terms of Reference from GRBP-78-13, procedural update from GRB-68-03, Analysis Task Force Report, Editing Task Force Report, R51.04 Issues List Review, draft R51.04 text review, Inside and Outside Boundary Condition discussions, and confirmation of next meeting date and place as August 31-September 1 in Geneva, Switzerland.

Downloads

UNECE server

Related documents

Excerpts from session reports

GRB | Session 68 | 12-14 Sep 2018

8. The expert from IWG ASEP presented GRB-68-03 on interpreting the general ASEP provisions in the last sentence of paragraph 6.2.3. of the 03 series of amendments to UN Regulation No. 51. IWG ASEP was of the view that the developed definitions and specifications were adequate and valid enough to satisfy the intention of this sentence. Outside the specified control range, IWG ASEP deemed it difficult to provide viable specifications. IWG ASEP suggested that the provided interpretation be used as guidance for manufacturers, technical services, and type approval authorities for the practical application during type approval, conformity of production, and market surveillance.

9. GRB endorsed GRB-68-03 and requested the secretariat to publish it as a reference document under a special folder on the GRB website. GRB also recommended IWG ASEP to keep this document for further consideration within the ongoing revision process of ASEP.

GRBP | Session 78 | 30 Aug-1 Sep 2023

7. The expert of the Informal Working Group on Additional Sound Emission Provisions (IWG RD-ASEP) presented their status report (GRBP-78-14) and the updated Terms of Reference (GRBP-78-13). GRBP agreed to rename IWG to the Informal Working Group on Real Driving – Additional Sound Emission Provisions (IWG RD – ASEP) and adopted its Terms of Reference, as contained in annex II to the session report.

GRBP | Session 83 | 10-13 Feb

7. The IWG RD-ASEP Subgroup on UN Regulations Nos. 51 and 138 reported on their activities (GRBP-83-08-Rev.1) and introduced GRBP-83-09-Rev.1 proposing to amend ECE/TRANS/WP.29/GRBP/2026/4. The representative of France acknowledged the good progress achieved, for example by requiring drivers to activate the device; he wondered about how to deal with artificial sound for speed > 80km/h, and its potential inclusion in the guidance document being prepared. He requested to be included in any task to update the provisions in the future. The representative of Germany confirmed a new version of GRB-68-03 was planned, providing guidance for speeds not covered by the current text.

8. GRBP adopted ECE/TRANS/WP.29/GRBP/2026/4 as amended by GRBP-83-09-Rev.1.

9. Given the adoption of ECE/TRANS/WP.29/GRBP/2026/4 as amended by GRBP-83-09-Rev1, the representative of OICA withdrew ECE/TRANS/WP.29/GRBP/2026/14 from consideration by GRBP.