Under the current 04 series of amendments to UN Regulation No. 41, the engine speed should be measured during all tests in Annex 3 and Annex 7 (Additional sound emission provisions – ASEP). However, IMMA has found that there is very little difference between the measured and the calculated engine speed for a manual transmission (MT) vehicle (Annex, figure 1) and no impact on the test result (Annex, figure 2). Therefore, this proposal would introduce a calculated engine speed for MT vehicles and for continuously variable transmission (CVT)/automatic transmission (AT) with locked gear mechanism into UN Regulation No. 41.

Correction to the text of the proposed amendment to introduce a calculated engine speed for manual transmission vehicles and for continuously variable transmission (CVT)/automatic transmission (AT) with locked gear mechanism into UN Regulation No. 41.

Correction of typographical errors in the original proposal (document GRB/2015/2): “locked” instead of “rocked”.

This proposal further refines and clarifies the 03 series of amendments to UN R51 from Informal Working Group on UN Regulations Nos. 51 and 59. The 03 series was proposed in document GRB/2014/5 which was amended and then adopted by the Working Party on Noise during its 60th session. The proposal includes special provisional limits for Chinese micro-vehicles which are being reviewed by Japan.

Correction to the text proposed by the informal working group on the revision of UN Regulations No. 51 and No. 59 to further refine UN R51.

Further refinements to the 02 series of amendments prepared by the Informal Working Group on UN Regulations Nos. 51 and 59. This submission proposes to clarify the amended text of document GRB/2014/6 which was approved during the 60th session of the Working Party on Noise and sent to WP.29 for consideration to adopt.

The purpose of this proposal is to update the reference to the latest version of the ISO 10844 and to introduce transitional provisions for the shift of the test track requirements from ISO 10844: 1994 to ISO 10844: 2014.

Draft proposal for minimum sound requirements (via an audible alerting signal) for low noise vehicles (e.g., electric vehicles).

Presentation of the benefits envisioned by the Netherlands from the use of AAA tyres.

Proposal from Japan, pursuant to the discussion of document GRB/2014/8 during the previous GRB session, to correct perceived inconsistencies in time measurement accuracy in annex 6.

Proposal to correct the Annex 7, paragraph 3.1. “Determination of the anchor point for each gear ratio” and a calculation symbol in paragraph 3.2.1 “Calculation of the slope of the regression line for each gear”.

Pursuant to the introduction of the deceleration method for measuring tire rolling resistance using the dω/dt approach (“Deceleration Calculator”) proposed by NAMI and accepted by GRB, UTAC (France) provides information on the results of tests conducted to confirm repeatability and reproducibility of the new method using different machines.

In response to concerns that approval agencies may not grant manufacturers the additional 1dB for L(wot) on conformity of production tests as changes had been made to Annex 6 of R41-04, GRB issued an interpretation recorded in the report of its 56th session. However, IMMA believes that industry and agency personnel may still not be aware of the interpretation. Therefore, IMMA proposes to codify the interpretation within UN R41.

Proposal to update and clarify the text of UN R28.

The purpose of this proposal is to update the reference to the latest version of the ISO 10844 and to introduce transitional provisions for the shift of the test track requirements from ISO 10844: 1994 to ISO 10844: 2014. This proposal supersedes document GRB/2015/5.

Proposal to update the test-track references to the recently published ISO 10844:2014.

Update on Russian developments and perspectives regarding the regulation of vehicle interior noise levels.

This document contains the consolidated text of proposals for the 03 series of
amendments to Regulation No. 51, as adopted by GRB at its sixtieth and sixty-first
sessions:
- ECE/TRANS/WP.29/GRB/58, para. 5, based on ECE/TRANS/WP.29/GRB/2014/5,
as amended by Annex III to ECE/TRANS/WP.29/GRB/58;1 and
- ECE/TRANS/WP.29/GRB/59, paras. 8-10, based on ECE/TRANS/WP.29/GRB/2015/3 and Corr.1, as amended by Annex III to ECE/TRANS/WP.29/GRB/59.

Following a decision of GRB, this consolidated text will be submitted to the June
2015 session of WP.29 for consideration and possible adoption.