TF-VS, RD ASEP IWG for 4 Wheel vehicle and 2 wheel vehicle, TF-AVRS

Proposal to amend document GRBP/2024/21

Presentation to support ECE/TRANS/WP.29/GRBP/2024/20

Gives the background to proposal for the Application of Noise Limits to EVs fitted with Exterior Sound Enhancement Systems (ESES) to UN R51

The text reproduced below was prepared by the experts from OICA in order to address the original intent of the Task Force on Quiet Road Transport Vehicles (TF QRTV). This proposes to expand the speed range of ASEP forBEVs down to speeds > 0 km/h.

This document for reference might be applied to measurement procedures
used in UN regulations of the Working Party on Noise and Tyres (GRBP).
It supports the definition of limit values during the development of
regulations by transparently presenting the measurement uncertainties
embodied in the measurement procedures during type approval,
conformity of production and other measurement reasons. Replaces GRBP/2024/08

Proposal to clarify the original intent of the Task Force on Quiet Road Transport Vehicles (TF QRTV) conclusion

Presentation by the IWG WGWT on the proposal to replace document ECE/TRANS/WP.29/GRBP/2024/23 by GRBP-80-11

The proposal provides a more clear indication by introducing the definition of “Front axle” so that it clarifies the interpretation of front steering axle.

ETRTO recommends to create a GRBP GOIE (Group of Interested Experts) involving CP’s
and NGO’s and with the goal to present an Informal Document by GRBP February 2025
session to validate the concept to be followed and implemented in a Working Document
by September 2025

EC resulting position to
• limit the emission of AVAS to what is strictly necessary for safety
• corollary: prohibit unnecessary noise

EC counter-proposal on the introduction of EVs in the scope of ASEP

Gives the objective and rules of procedure of TF

Transmitted by the experts of TF-AVRS for amendments to take automated vehicles into considerations

Proposal to delete this footnote 2 from the regulation

Proposal by the IWG WGWT to replace document ECE/TRANS/WP.29/GRBP/2024/23. This proposal aims as a first step to standardize the water depth measurement.

Proposal prepared by the experts from the IWG RD-ASEP in order to clarify the application of the Annex 7 ASEP testing conditions of motorcycles.

This proposal aims at aligning the emission of AVAS sounds with safety needs

IWG RD-ASEP has two parts:
A) RD-ASEP for UN-R51, to develop a mandatory procedure after the
monitoring phase
B) RD-ASEP for UN-R41: ASEP second step, to develop stricter ASEP limit
curves

Proposal to clarify that FRT tyres shall not be fitted to front steering and drive axles of motor vehicles.

Correction to the French version of the document which had a missing text in Annex 5 Table 7.

Proposal to clarify the requirements for non-original replacement exhaust silencing systems (NORESS).

Proposal to clarify that wet adhesion provisions apply to C1, C2, and C3 tyres, correct ISO and internal references, clarify symbols “ARC” and “ARR” relationships to indoor drum test method, and clarify application to M+S marked tyres.

Proposal from the Wet Grip on Worn Tyres informal group to standardize provisions for the water depth measurement and to reduce the track friction range requirements under the test procedures.

Proposal to correct an omission and clarify the text of Annex 3: The positioning and order of the markings shall be as follows:….

Proposal to clarify that the maximum sound pressure requirement at the front plane at standstill condition in reverse shall be equal to the maximum level requirement in motion (defined by the QRTV task force as 75 dB(A) for both standstill and reverse driving).

Proposal to clarify the text:

• clarify Annex 4 and exclude aluminum-alloy and magnesium-alloy wheels under test (b)
• clarify Annex 6 with regard to possible defects caused by the production process and not affecting the appearance of cracks during testing
• recommend under Annex 6 to identify cracks occurred as a result of the test by using penetrating paints
• clarify Annexes 7 and 8 with regard to air leakage.