3. The expert from Italy, chairing the informal group on Regulation No. 41, recalled the discussion of GRB at its previous session (ECE/TRANS/WP.29/GRB/2009/3 and GRB-51-16) and reported on the progress of work made by the informal group during its meeting on 1 June 2010. Referring to the working papers available on the website http://www.unece.org/trans/main/wp29/wp29wgs/wp29grb/R41-14th.html, he informed GRB that the informal group could find an agreement on:
(a) an additional or enlarged plate;
(b) the new type approval test method for measuring the noise levels including provisions for anti-tampering; and
© the Additional Sound Emission Provisions (ASEP) including the so called mystery points.

4. He announced the informal group’s intention to finalize the draft 04 series of amendments to Regulation No. 41 and to submit the proposal, as an official document, to GRB for a detailed consideration at its next session in February 2011. For this purpose, all GRB experts were invited to send their comments at latest by the end of September 2010 to the Secretary of the informal group (erwin.segers@honda-eu.com).

5. On the new limit values for the noise emissions of motorcycles, GRB welcomed the initiative of the informal group to set up a data base to collect type approval data on current noise levels.

6. The expert from ISO introduced ECE/TRANS/WP.29/GRB/2010/7 proposing a clarification to the stationary noise testing provisions with regard to vehicles in which the internal combustion engine does not operate during the stationary conditions. GRB adopted the proposal and agreed to submit it to WP.29 and AC.1 for consideration at their June 2011 sessions, together with the draft 04 series of amendments to Regulation No. 41 (see para. 4 above).

38. Upon the request of WP.29 at its March 2010 session (ECE/TRANS/WP.29/1083, para. 27), GRB noted the guidelines on establishing requirements for high-priority signals (GRB-52-01). As no Regulation currently under the responsibility of GRB was referring to warning signals or control systems, it was a general opinion that GRB was not concerned by the guidelines. Nevertheless, GRB agreed to review, at its next session in February 2011, the proposed text on auditory warnings (GRB-52-01, page 10).

7. The expert from ISO introduced ECE/TRANS/WP.2/GRB/2010/6 proposing the same clarification to the provisions of Regulation No. 51 as mentioned under paragraph 6 above. GRB adopted the proposal and agreed to submit it to the World Forum for Harmonization of Vehicle Regulations (WP.29) and its Administrative Committee (AC.1) for consideration at their March 2011 sessions, as Corrigendum 3 to the 02 series of amendments to Regulation No. 51.

8. The expert from ISO informed GRB on the current status of the revision of standard ISO 10844 regarding the technical changes to the specifications of test tracks for vehicle noise measurements (GRB-52-02). He volunteered to present the final text of the updated ISO standard at the next session of GRB and expected that the document would then be published in 2012. GRB agreed to consider, at its next sessions, the necessary amendments to Regulations Nos. 41 and 51 with regard to the optional and mandatory application of these updated specifications of ISO 10844. GRB noted the position of the expert from the Netherlands (GRB-52-20) on the proposed range of values for the allowable texture. The expert from ISO stated that this issue had been discussed extensively within the ISO working group. He volunteered to take care of this issue and to come back to GRB at its next session in February 2011 with a possible solution.

9. Referring to GRB-51-20 and the discussion of GRB at its previous session, the expert from OICA presented GRB-52-04 showing the considerable contribution of the propulsion system, including the traction tyres, to the vehicle noise emissions in real urban traffic, especially for commercial vehicles equipped with a high powered engine, due to the high influence of the engine torque on traction tyre noise. GRB welcomed this information and agreed on the need to amend, in this respect, Regulation No. 51. The expert from OICA was invited to prepare a concrete proposal for consideration at the next GRB session.

7. The expert from ISO introduced ECE/TRANS/WP.2/GRB/2010/6 proposing the same clarification to the provisions of Regulation No. 51 as mentioned under paragraph 6 above. GRB adopted the proposal and agreed to submit it to the World Forum for Harmonization of Vehicle Regulations (WP.29) and its Administrative Committee (AC.1) for consideration at their March 2011 sessions, as Corrigendum 3 to the 02 series of amendments to Regulation No. 51.

8. The expert from ISO informed GRB on the current status of the revision of standard ISO 10844 regarding the technical changes to the specifications of test tracks for vehicle noise measurements (GRB-52-02). He volunteered to present the final text of the updated ISO standard at the next session of GRB and expected that the document would then be published in 2012. GRB agreed to consider, at its next sessions, the necessary amendments to Regulations Nos. 41 and 51 with regard to the optional and mandatory application of these updated specifications of ISO 10844. GRB noted the position of the expert from the Netherlands (GRB-52-20) on the proposed range of values for the allowable texture. The expert from ISO stated that this issue had been discussed extensively within the ISO working group. He volunteered to take care of this issue and to come back to GRB at its next session in February 2011 with a possible solution.

9. Referring to GRB-51-20 and the discussion of GRB at its previous session, the expert from OICA presented GRB-52-04 showing the considerable contribution of the propulsion system, including the traction tyres, to the vehicle noise emissions in real urban traffic, especially for commercial vehicles equipped with a high powered engine, due to the high influence of the engine torque on traction tyre noise. GRB welcomed this information and agreed on the need to amend, in this respect, Regulation No. 51. The expert from OICA was invited to prepare a concrete proposal for consideration at the next GRB session.