Working Party
Working Party on Noise
58th session | Geneva | 2-4 Sep 2013 Download Copy
Agenda Item 3. (a) | Development
Document(s)
GRB-56-12 | Proposal for amendments to the proposal for the 03 series of amendments to Regulation No. 51 (Netherlands)
GRB-57-13 | Proposal of amendments to document GRB/2013/4 (China)
GRB-58-03 | Proposal for Supplement 10 to the 02 series of amendments to Regulation No. 51 (OICA)
GRB-58-04 | Proposal for the 03 series of amendments to Regulation No. 51
GRB-58-07 | ASEP acceleration test proposals for low and high-powered vehicles (CATARC)
GRB-58-15 | Japan position on document GRB-58-04 (Japan)
GRB-58-17 | Proposal for the 03 series of amendments to Regulation No. 51
GRB-58-17/Rev.1 | Proposal for the 03 series of amendments to Regulation No. 51: Revised
GRB/2012/8 | Proposal for the 03 series of amendments to Regulation No. 51 (OICA)
GRB/2012/16 | Proposal for Supplement 8 to the 02 series of amendments to Regulation No. 51 (Netherlands)
GRB/2013/4 | Proposal for Supplement 9 to the 02 series of amendments to Regulation No. 51 (China)
Related pages: UN R51 Vehicle Noise

GRB-58 Discussion

7. The expert from OICA, secretary of the group of interested expert on vehicle noise, introduced GRB-58-04 (superseding ECE/TRANS/WP.29/GRB/2012/8, ECE/TRANS/WP.29/GRB/2012/16 and GRB-56-12) as a result of discussions in the last meeting of his group held in Brussels on 4 July 2013. The expert from EC, Chair, of the same group clarified that GRB-58-04 was an attempt to merge the provisions of the proposal of the Parliament and the Council of the EU1 with the current proposal of 03 series of amendments to UN Regulation No. 51 and including additional aspects concerning the Chinese and Japanese markets, which were beyond the scope of the European Union legislation. He added that the outcome of discussions that would follow within GRB would be transmitted to the EU legislators with the aim of harmonizing the proposal with the draft 03 series of amendments. The expert from Japan proposed GRB-58-15 proposing the removal from GRB-58-04 of specifications on audible vehicle alerting system (AVAS) which is still in the process of development in the framework of activities of the UN GTR on Quiet Road Transport Vehicles (QRTV). The expert from Japan, Vice-Chair of the QRTV informal working group (IWG), also on behalf of the Chair of the IWG, reported similar concerns and request. The experts from China, the Republic of Korea and OICA supported these remarks. GRB endorsed the proposal made by the expert from Japan by suspending the discussion on AVAS provisions. GRB agreed to incorporate the results of discussion, including those of agenda item 3(b) (see paras. 10 and 11) into GRB-58-17-Rev.1., superseding GRB-58-04. It was noted that provisions still pending or suspended, were placed in square brackets in this document. The Chair of GRB clarified that GRB-58-17-Rev.1 would remain, on an informal basis, as a platform of discussion between the experts from GRB and EU in the group of interested experts on vehicle noise. GRB agreed to resume discussion on this subject on the basis of the outcome of next meetings of the group of interested experts scheduled for the first week of November 2013 and for the second week of January 2014 (both in Brussels).

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8. Concerning the current 02 series of amendments to the UN regulation, GRB considered GRB-58-03, tabled by the expert from OICA updating the requirements on the noise test track from ISO 10844:1994 to ISO 10844:2011. GRB requested the secretariat to distribute GRB-58-03 with an official symbol at its next session.

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9. Finally GRB resumed discussion on ECE/TRANS/WP.29/GRB/2013/4 and GRB-57-13 proposing amendments to improve the test method of the 02 series of amendments to the UN Regulation. Moreover, the expert from China introduced GRB-58-07, to propose an amendment to the acceleration test value. GRB agreed to postpone decision on these proposals until its January 2014 session, awaiting the outcome of the ongoing discussion in ISO Working Group 42 on revising Standard ISO 362-1:2007, referred in the current test method of the UN Regulation.

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Previous Discussion(s)

Working Party on Noise | Session 56 | 3-5 Sep 2012

2. GRB considered and adopted the agenda ECE/TRANS/WP.29/GRB/2012/4 and its Add.1 including new agenda items 15(a), 15(b), 17 and 18.

3. GRB noted ECE/TRANS/WP.29/GRB/2012/5, tabled by the expert from the Russian Federation, to provide harmonized definitions on vehicle type concerning noise, the terms noise and sound. The expert from IMMA expressed a reservation (GRB-56-08) on the proposal as a whole arguing that the introduction of new definitions would be premature, taking into account the recent publication of Revision 2 of UN Regulation No. 41. GRB agreed to resume consideration on this proposal at its February 2013 session on the basis of further information provided by the expert from the Russian Federation.

4. GRB considered GRB-56-04, introduced by the expert from ISO, updating the text concerning the test site of the UN Regulation with the latest amendment of ISO Standard 5130:2012. The proposal received comments from the expert by Germany who suggested more objective criteria in verifying the level of porosity of the test site. GRB agreed to resume consideration on this subject on the basis of a revised proposal voluntarily prepared by the expert from ISO.

5. The expert from IMMA sought GRB’s clarification on paragraph 8.2. on the conformity of production tests, specifically: whether the 1 dBA allowance was applicable to the maximum A-weighted sound pressure level representing urban driving (Lurban) and to the sound pressure level in wide open throttle (Lwot). GRB agreed that currently paragraph 6.2.3. (specification regarding sound levels) clearly stated that the difference between Lwot shall not exceed the limit value for Lurban by more than 5 dB and if the +1dB was applied to Lurban, as given in Annex 6, then this additional +1 dB allowance was automatically also applicable to Lwot value.

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6. See also, para. 20, concerning the updating of the requirements on the noise test track from ISO 10844:1994 to ISO 10844:2011, GRB agreed to defer discussion on ECE/TRANS/WP.29/GRB/2012/16 and ECE/TRANS/WP.29/GRB/2012/17 to its February 2013 session.

7. The expert from OICA introduced ECE/TRANS/WP.29/GRB/2012/8, consolidating a proposal of 03 series of amendments to UN Regulation No. 51. The proposal received comments from the expert of ETRTO (GRB-56-16) proposing to change the vehicle test conditions of Annex 10 of UN Regulation No. 51. GRB noted that the proposed changes (GRB-56-16) have already been adopted as Supplement 8 to the 02 series of amendments and agreed to amend ECE/TRANS/WP.29/GRB/2012/8 accordingly. Moreover, the expert from the Netherlands introduced GRB-56-12 proposing a new layout for the communication form. GRB agreed to resume consideration at its February 2013 session on ECE/TRANS/WP.29/GRB/2012/8 on the basis of a revised document prepared by the expert from the Netherlands in cooperation with the experts from CLEPA and OICA. GRB recommended experts to provide detailed comments.

8. GRB considered and adopted GRB-56-03 as reproduced in Annex II to this report, amending the figure for measuring positions of vehicles in motion. The secretariat was requested to submit the proposal to WP.29 and AC.1 for consideration at their March 2013 session as Supplement 9 to the 02 series of amendments to UN Regulation No. 51.

9. Finally GRB considered GRB-56-06, tabled by the expert from China, introducing amendments to the test method. He introduced GRB-56-09 for information, showing the difference among the test methods in UN Regulation No. 51, ISO 362 and the Chinese standard (GBI1495-2002) and GRB-56-22 as a justification to the proposed amendments to the test. The expert from OICA suggested that such relevant outcome of research should be brought together with those from other Contracting Parties to the 1958 Agreement (i.e. European Union) to keep UN Regulation No. 51 relevant worldwide. GRB agreed to resume discussion at the February 2013 session on a possible official proposal (based on GRB-56-06) tabled by the expert from China in cooperation with the expert from ISO.

10. The EC expert informed GRB on the work progress of the European Union (EU) institutions on the EC proposal on vehicle noise. He added that at this stage no political agreement on new limits had been reached at the EU level.

11. The expert from China introduced GRB-56-07, proposing a different scheme to identify vehicle categories. He also added that his proposal would offer an option to cover needs of a broader range of countries. The experts from Japan and OICA endorsed the Power to Mass Ratio index (PMR) as a tool to link noise emission and vehicle performance. The EC expert recalled that to overcome the different national political priorities/classifications, the discussion should be focused on the mutual recognition principle of the 1958 Agreement, i.e. the vehicle complying with the lowest noise level would be accepted everywhere. He recalled that this would not prevent Contracting Parties from having less stringent requirements in their national law for their internal markets. Finally GRB agreed to resume consideration of GRB-56-07 at its February 2013 session to provide study time for experts.

12. GRB considered GRB-56-01 and GRB-56-05 supplementing ECE/TRANS/WP.29/GRB/2012/7 tabled by the expert from Japan. He explained that the proposal was based on GRB-55-01, including limit values with some modification of the threshold of subcategories, as a basis for a common position with the proposal tabled by the expert from Germany (GRB-54-03). Moreover, he made a presentation (GRB-56-21) concerning rationales for the proposed Stage 3 of limit values. The EC expert stated that the review of vehicle classification should not only consider the proposals tabled by the experts from Germany and Japan, but also the present vehicle classification in UN Regulation No. 51 and in the EC proposal and verify the rationales for the changes proposed by the experts from Germany and Japan.

GRB recalled that the EC proposal was available at: http://ec.europa.eu/enterprise/sectors/automotive/documents/proposals/index_en.htm#h2-1

13. Upon the suggestion of the Chair, GRB agreed to verify data and provide a basis for analysis for a power reference value of 160 kW in vehicle category M3 and for the reference value of 140 kW in vehicle category N2. Finally, GRB agreed to resume consideration on this subject at its February 2013 session on the basis of the above test data, if available, and on those existing provided by the experts from China, Japan and EC.

14. GRB noted that no new information had been given under this agenda item.

15. The expert from CLEPA introduced GRB-56-17 listing further test results of four vehicles performed by his organization on additional sound emission provisions (ASEP) of replacement silencing systems. GRB noted that as an outcome of the test, two possible alternatives were possible to introduce ASEP provisions into UN Regulation No. 59: (i) the test should be carried out back to back to the original equipment and replacement system (ii) the manufacturer of the replacement system should perform the test with the same acceptance criteria as for the original equipment. GRB, in principle, agreed to follow option (ii) and to resume consideration on this subject at its February 2013 session on the basis of a concrete proposal tabled by the expert from CLEPA.

16. GRB noted that no new information had been given under this agenda item.

17. Referring to the report of the Working Party on Brakes and Running Gear (GRRF) (see ECE/TRANS/WP.29/GRRF/72, paras. 25 and 32-34), GRB considered ECE/TRANS/WP.29/2012/54 and ECE/TRANS/WP.29/2011/55, proposing to add specific performance requirements for C2 snow tyres and amending the definition of the measuring rim for C1, C2 and C3 tyres. GRB endorsed ECE/TRANS/WP.29/2012/55 without amendment, scheduled to be considered by WP.29 and AC.1 at their November 2012 sessions. Concerning ECE/TRANS/WP.29/2012/54, GRB considered GRB-56-15 tabled by the expert from Germany, proposing to introduce the inscription “M+S” or “M.S” or “M&S” only in combination with the “Alpine” symbol on a mandatory basis, if the tyre be classified as a “snow tyre for use in severe snow conditions”. Accordingly, GRB endorsed ECE/TRANS/WP.29/2012/54, as amended by Annex III to this report and agreed to submit it to WP.29 and AC.1, for consideration at their November 2012 sessions as draft Supplement 2 to the 02 series of amendments, subject to a final review by GRRF at its September 2012 session.

18. The expert from ETRTO introduced ECE/TRANS/WP.29/GRB/2012/10 aligning the text of Annex 6 of the UN Regulation to ISO Standard 28580. GRB adopted the proposal not amended and agreed to submit it to WP.29 and AC.1, for consideration at their March 2013 session as draft Supplement 3 to the 02 series of amendments to UN Regulation No. 117, also subject to a final review by GRRF at its September 2012 session (see ECE/TRANS/WP.29/GRRF/2012/18).

19. The expert from ETRTO proposed to amend the snow test method for C3 tyres (ECE/TRANS/WP.29/GRB/2012/11). However, GRB argued that some of the proposed amendments could conflict with the recommended introduction of blocking differential on driven axle as increasing repeatability in the test. GRB agreed to resume consideration of the proposal at its next session on the basis of an official document submitted to the March 2013 sessions of WP.29 and AC.1, incorporating possible changes (see ECE/TRANS/WP.29/GRRF/2012/19) agreed by GRRF at its September 2012 session.

20. The expert from the Netherlands introduced ECE/TRANS/WP.29/GRB/2012/15 and ECE/TRANS/WP.29/GRB/2012/18 updating the test track provisions to ISO 10844:2011. The expert from ETRTO introduced similar amendments (ECE/TRANS/WP.29/GRB/2012/9) but without transitional provisions. GRB agreed that the introduction of new provisions for the test track should refer to a new series of amendments of the UN Regulation. Following the suggestion of the Chair and Vice-Chair, GRB considered GRB-56-20 (superseding ECE/TRANS/WP.29/GRB/2012/15, ECE/TRANS/WP.29/GRB/2012/18 and ECE/TRANS/WP.29/GRB/2012/9) drafted in accordance with ECE/TRANS/WP.29/1044/Rev.1 “Guidelines on the scope, administrative provisions and alternative requirements in Regulations annexed to the 1958 Agreement”. GRB requested the secretariat to distribute GRB-56-20 with an official symbol at its February 2013 session and agreed to refer to it as a basis to continue discussion on this subject.

21. Finally, GRB considered GRB-56-02 tabled by the expert from the Russian Federation aimed at providing detailed elaboration of the concept of tyre deceleration (dω/dt) in the test technology. The secretariat was requested to distribute it with an official symbol at its February 2013 session, pending the clarification of the reference to the “deceleration calculator” mentioned in the proposal.

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22. GRB noted that no new information had been given under this agenda item.

23. The expert from IMMA introduced ECE/TRANS/WP.29/GRB/2012/13 and ECE/TRANS/WP.29/GRB/2012/14 respectively amended by GRB-56-10 and GRB-56-11. He clarified that both proposals were aimed at introducing into UN Regulations Nos. 9 and 63 new requirements for improved noise control of motorcycles and anti-tampering measures, but not yet ASEP provisions. GRB adopted ECE/TRANS/WP.29/GRB/2012/13 and ECE/TRANS/WP.29/GRB/2012/14 as amended by Annex IV to this report. The secretariat was requested to submit them to WP.29 and AC.1 for consideration at their March 2013 sessions: ECE/TRANS/WP.29/GRB/2012/13 as draft 07 series of amendments to UN Regulation No. 9 and ECE/TRANS/WP.29/GRB/2012/14 as draft 02 series of amendments to UN Regulation No. 63.

24. The expert from Japan introduced GRB-56-18 providing an overview of the current framework of vehicle noise regulation in his country. Upon the suggestion of the GRB Chair, it was agreed to continue an exchange of information on the basis of data concerning noise values declared by manufacturers for each different tyre classes.

25. The expert from ETRTO gave a presentation (GRB-56-14), on a holistic approach for rolling noise mitigation. For an efficient decrease of rolling noise he underlined the need to take into account road construction. GRB invited the expert from ETRTO to develop studies on this subject and to inform experts at further sessions.

26. The expert from EC, secretary of the informal working group on Quiet Road Transport Vehicles (QRTV), reported on the outcome of the first meeting of the group held on 18-20 July 2012 in Washington D.C., United States of America (USA). He added that the next meeting of the group was planned for the beginning of December 2012. GRB noted that the publication of the New Proposal of Rule Making (NPRM) to which the development of the UN GTR on QRTV was linked, was not yet publicly available in the United States of America. Finally, the GRB Chair invited all experts to provide comments to the NPRM as soon as it was be published.

27. The expert from OICA introduced GRB-56-13, providing an overview of the current definitions in UN Regulations under the responsibilities of GRB. However, GRB agreed to resume discussion at its February 2013 session on the basis of informal documents listing all acronyms associated to the UN Regulations concerned. Accordingly, GRB agreed to follow the layout of GRSP-51-03, considered during the May 2012 session of the Working Party on Passive Safety (GRSP), designed for this purpose. Finally, it was agreed that the informal documents would list the acronyms of: (i) UN Regulation No. 51 by the expert from OICA, (ii) UN Regulations Nos. 59 and 28 by the expert from CLEPA and (iii) UN Regulation Nos. 9, 41, 63 and 92 by the expert from IMMA for consideration at the next session of GRB.

28. The expert from the Russian Federation introduced ECE/TRANS/WP.29/GRB/2012/12 aimed at revising the Consolidated Resolution on the Construction of Vehicles (R.E.3). GRB decided to resume discussion on this subject at its February 2013 session, awaiting revised proposals tabled by the expert from the Russian Federation and reproducing the different subjects proposed by ECE/TRANS/WP.29/GRB/2012/12 (e.g. interior noise level). In the meantime, it was requested that the experts from ISO and OICA provide their comments on ECE/TRANS/WP.29/GRB/2012/12 to the expert from the Russian Federation to finalize the revised proposals.

29. The Chair informed GRB that the next Environmental Friendly Vehicle conference (EFV) would be held in Baltimore, USA, from 10 to 12 September 2012. GRB would be updated on the outcome accordingly, in February 2013.

30. GRB considered document WP.29-156-21-Rev.1 and nominated the delegation of the European Commission to ensure the task of Ambassador for GRB on IWVTA activities of WP.29.

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33. In compliance with Rule 37 of the Rules of Procedure (TRANS/WP.29/690 and Amend.1), GRB elected its officer on Tuesday afternoon. Mr. S. Ficheux (France) was unanimously elected Chair of GRB for the sessions scheduled in 2013.

1. The Working Party on Noise (GRB) held its fifty-sixth session from 3 (afternoon) to 5 (afternoon) September 2012 in Geneva. The meeting was chaired by Mr. Ch. Theis (Germany). Experts from the following countries participated in the work following Rule 1(a) of the Rules of Procedure of the World Forum for Harmonization of Vehicle Regulations (WP.29) (TRANS/WP.29/690 and Amend.1): Belgium; Brazil; Czech Republic; China; France; Germany; Hungary; India; Italy; Japan; Netherlands; Norway; Poland; Republic of Korea; Russian Federation; Serbia; South Africa; Spain; Sweden; Switzerland; United Kingdom of Great Britain and Northern Ireland. Experts from the European Commission (EC) participated. Experts from the following non-governmental organizations also participated: European Association of Automobile Suppliers (CLEPA); International Motorcycle Manufacturers Association (IMMA); International Organization for Standardization (ISO); International Organization of Motor Vehicle Manufacturers (OICA). Upon the special invitation of the Chair, experts from the following non-governmental organization participated: European Tyre and Rim Technical Organisation (ETRTO).

31. Referring to the request of WP.29 agreed at its June 2012 session (see ECE/TRANS/WP.29/1097, para. 14), GRB considered a proposal (WP.29-157-06) on design/control principles of Advanced Driver Assistance Systems to harmonize minimum guidelines tabled by the informal working group on Intelligent Transport Systems (ITS) and adopted it without comments.

32. GRB noted the request of WP.29 at its June 2012 session (see ECE/TRANS/WP.29/1097 para. 12) to its representatives and experts to use the template contained in WP.29-157-07-Rev.1 when preparing official documents for the World Forum and its subsidiary bodies.

34. Learning that Mr. C. Theis would no longer participate in future sessions of GRB, the group acknowledged his valuable contribution to the work of GRB and wished him all the best in his future activities.

35. For its fifty-seventh session, scheduled to be held in Geneva from 5 (starting at 2.30 p.m.) to 7 (concluding at 5.30 p.m.) February 2013, GRB noted that the deadline for submission of official documents to the secretariat was 9 November 2012, twelve weeks prior to the session. Moreover, the following provisional agenda was adopted:

1. Adoption of the agenda.
2. Regulation No. 41 (Noise of motorcycles): Development.
3. Regulation No. 51 (Noise of M and N categories of vehicles):
(a) Development;
(b) New limit values;
© Additional sound emission provisions.
4. Regulation No. 59 (Replacement silencing systems).
5. Regulation No. 92 (Replacement exhaust silencing systems for motorcycles).
6. Regulation No. 117 (Tyre rolling noise and wet grip adhesion).
7. Collective amendments:

  • (a) Regulation Nos. 41, 51 and 59;
  • (b) Regulation Nos. 9 and 63.
    8. Exchange of information on national and international requirements on noise levels.
    9. Influence of road surface on tyre rolling sound emissions.
    10. Quiet Road Transport Vehicles.
    11. Definitions and acronyms in Regulations under GRB responsibilities.
    12. Proposal for amendments to Consolidated Resolution on the Construction of Vehicles.
    13. Environmentally Friendly Vehicles.
    14. Development of the International Whole Vehicle Type Approval (IWVTA) system and involvement of the Working Parties (GRs) in it
    15. Other business.
    16. Provisional agenda for the fifty-eighth session
Working Party on Noise | Session 57 | 5-7 Feb 2013
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21. GRB noted that no new information had been given under this agenda item.

27. The expert from EC, secretary of the informal working group on Quiet Road Transport Vehicles (QRTV), introduced the status report of the second meeting of QRTV (GRB-57-29) and announced that the Notice of Proposed of Rulemaking (NPRM) of the United States of America (US) on minimum sound requirements for hybrid and electric vehicles was published on 9 January 2013, including a draft environmental assessment study. He informed GRB that the next meeting of QRTV would be held from 16 to 18 April 2013 in Brussels. He also introduced GRB-57-15 to propose the development of a “sound emission profiling test” for QRTV to match safety and environmental needs and support the positive impact on traffic noise introduced by the deployment of Electric Vehicles (EVs) and Hybrid Electric Vehicles (HEVs). He invited GRB experts to assess the feasibility of this proposal in which the main objective would be the profiling of vehicle noise up to a speed of 30 km/h.

28. The Chair of GRB underlined the opportunity given by the publication of the NPRM to provide the US authorities with comments by GRB. The expert from the Netherlands expressed concerns on how the audible vehicle alerting system (AVAS) installed on QRTV could negatively affect the environment. He also expressed concerns on how the installation of such devices would probably shift the responsibility of the driver to vulnerable road users such as visually impaired people. As a general comment to the NPRM, GRB agreed that the development of the UN Global Technical Regulation on QRTV (that would also be based on the NPRM and on ECE/TRANS/WP.29/GRB/2012/6), should be environmentally friendly and coherent with vehicle noise levels worldwide including ASEP provisions. Finally, the Chair of GRB invited all experts to provide comments on the NPRM directly to the National Highway Traffic Safety Administration (NHTSA). GRB agreed to resume discussion at its September 2013 session on the basis of the outcome of the informal working group.

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34. GRB noted that no new information had been given under this agenda item.

35. The expert from EC introduced GRB-57-24, showing the need to candidate UN Regulations, under the responsibility of GRB, applicable to IWVTA. GRB agreed to candidate UN Regulations Nos. 28 and 51 excluding UN Regulation No. 117 in view of possibly developing a UN Regulation by GRRF covering the installation of tyres on vehicles.

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38. For its fifty-eighth session, scheduled to be held in Geneva from 2 (starting at 2.30 p.m.) to 4 (concluding at 5.30 p.m.) September 2013, GRB noted that the deadline for submission of official documents to the secretariat was 7 June 2013, twelve weeks prior to the session. Moreover, the following provisional agenda was adopted:

1. Adoption of the agenda.
2. Regulation No. 41 (Noise of motorcycles): Development.
3. Regulation No. 51 (Noise of M and N categories of vehicles):
(a) Development;
(b) New limit values;
(c) Additional sound emission provisions.
4. Regulation No. 59 (Replacement silencing systems).
5. Regulation No. 92 (Replacement exhaust silencing systems for motorcycles).
6. Regulation No. 117 (Tyre rolling noise and wet grip adhesion).
7. Collective amendments:
(a) Regulations Nos. 41, 51 and 59;
(b) Regulations Nos. 9 and 63;
(c) Additional sound emission provisions for Regulations Nos. 9, 63 and 92;
(d) Proposal for amendments to Regulations Nos. 28, 51, 59 and 117.
8. Exchange of information on national and international requirements on noise levels.
9. Influence of road surface on tyre rolling sound emissions.
10. Quiet Road Transport Vehicles.
11. Definitions and acronyms in Regulations under GRB responsibilities.
12. Proposal for amendments to Consolidated Resolution on the Construction of Vehicles.
13. Environmentally Friendly Vehicles.
14. Development of the International Whole Vehicle Type Approval (IWVTA) system and involvement of the Working Parties (GRs) in it
15. Other business.
16. Provisional agenda for the fifty-ninth session.

36. The expert from OICA introduced GRB-57-04 (amending WP.29-157-06) on design/control principles of Advanced Driver Assistance Systems to harmonize minimum guidelines tabled by the informal working group on Intelligent Transport Systems (ITS). GRB invited all experts to provide their comments to the expert from OICA by the end of February 2013.

23. The expert from EC introduced GRB-57-14, fostering the development of ASEP provisions for UN Regulations Nos. 9, 63 and 92. He added that his requested was motivated by the upcoming development of EU legislation on vehicle category L. GRB agreed to resume consideration on this agenda item on the basis of a proposed road map to cover this issue tabled by the expert from IMMA. In the meantime, experts were invited to send their comments to the expert from IMMA as support in the development of this proposal.

1. The Working Party on Noise (GRB) held its fifty-seventh session from 5 (afternoon) to 7 (afternoon) February 2013 in Geneva. The meeting was chaired by Mr. S. Ficheux (France). Experts from the following countries participated in the work following Rule 1(a) of the Rules of Procedure of the World Forum for Harmonization of Vehicle Regulations (WP.29) (TRANS/WP.29/690, Amend.1 and Amend.2): Belgium; Czech Republic; China; France; Germany; India; Italy; Japan; Netherlands; Norway; Poland; Russian Federation; Serbia; South Africa; Spain; Sweden; Switzerland; United Kingdom of Great Britain and Northern Ireland. Experts from the European Commission (EC) participated. Experts from the following non-governmental organizations also participated: European Association of Automobile Suppliers (CLEPA); International Motorcycle Manufacturers Association (IMMA); International Organization for Standardization (ISO); International Organization of Motor Vehicle Manufacturers (OICA). Upon the special invitation of the Chair, experts from the following non-governmental organization participated: European Tyre and Rim Technical Organisation (ETRTO).

3. GRB resumed discussion on ECE/TRANS/WP.29/GRB/2012/5, tabled by the expert from the Russian Federation, providing harmonizing definitions on vehicle type concerning noise, the terms noise and sound. The expert from the Russian Federation introduced comments (GRB-57-21) to the concerns raised by the expert from IMMA to his proposal during the September 2012 session of GRB. The expert from IMMA recalled his reservation (GRB-56-08) to ECE/TRANS/WP.29/GRB/2012/5 and announced the provisions of further information for the September 2013 session of GRB. Accordingly, GRB agreed to resume discussion on this proposal at its next session on the basis of detailed information provided by the experts concerned.

4. GRB also resumed discussion on GRB-56-04, tabled by the expert from ISO, updating the text of the UN Regulation concerning the test site with the latest amendment of ISO Standard 5130:2012. The expert from ISO announced that the objectivity of the criteria in verifying the level of porosity of the test site had been clarified with expert from Germany and that a revised proposal was not needed. GRB agreed to resume consideration on this subject at its next session and requested the secretariat to distribute GRB-56-04 with an official symbol.

5. Concerning the updating of the requirements on the noise test track from ISO 10844:1994 to ISO 10844:2011, GRB agreed on aligning the UN Regulation with the decision taken for UN Regulation No. 117 on this subject (superseding ECE/TRANS/WP.29/GRB/2012/16) (see also paras. 16 and 17). Accordingly, the expert from OICA withdrew GRB-57-20 and it was agreed to keep ECE/TRANS/WP.29/GRB/2012/16 for reference. Finally, GRB agreed to defer discussion at its September 2013 session on the basis of a revised consolidated proposal of 03 series of amendments to the UN Regulation (ECE/TRANS/WP.29/GRB/2012/8) including a new proposal for transitional provisions (GRB-57-17), ECE/TRANS/WP.29/GRB/2012/17 and the provisions of Supplement 8 to the 02 series of amendments (see para. 10).

6. The expert from China introduced ECE/TRANS/WP.29/GRB/2013/4 and GRB-57-13 proposing amendments to improve the test method of the 02 series of amendments to the UN Regulation. The expert from OICA questioned the opportunity of introducing amendments to the 02 series of amendments, taking into account that the latter one would be superseded in a short time by the 03 series of amendments. He finally proposed that draft amendments of method B, concerning Annexes 9 and 10 of the UN Regulation introduced by ECE/TRANS/P29/GRB/2013/4, would be discussed at the next ISO Working Group 42 meeting in April, because affecting the measurement procedure of method B reproduced in Standard ISO 362-1:2007. The expert from ISO agreed on this approach. GRB agreed to resume discussion on this subject at its September 2013 session on the basis of a proposal jointly revised by the experts from China, ISO and OICA.

7. GRB resumed consideration on vehicle categories and their limit values on the basis of an existing database in China, Japan and EC. The expert from Japan introduced again GRB-56-05 and then GRB-57-22 explaining that according to the monitoring database in his country, the best fitting threshold for vehicle categories N2 and M3particularly should be 135 kW of power mass ratio (PMR). He continued that this value would encompass properly downsized vehicles that have a high impact on noise emissions from the vehicle fleets in Asian countries. He urged finding a compromise on vehicle categories and the adoption of a concrete proposal of the 03 series of amendments to the UN Regulation (i.e. ECE/TRANS/WP.29/GRB/2012/7). He stated that the introduction of additional sound emission provisions (ASEP) was much awaited in Japan. The expert from China gave two presentations (GRB-57-05 and GRB-57-06), to introduce possible compromise solutions (GRB-57-07) focusing on design characteristics as well as on PMR. The expert from OICA expressed appreciation for the efforts made by the expert from China to find convergence on the vehicle classification and introduced a possible compromise solution (GRB-57-19). The expert from Germany recalled that GRB started discussion with the agreement of developing a proposal for amendments focused on performance criteria rather than on design requirements. Moreover, he added that the allowance of 1 dBA for vehicles with direct injection diesel engines no longer justified. Finally, he recommended simplifying classes and subclasses, to avoid cumbersome vehicle classification thresholds that could hamper technical progress.

8. The EC expert informed GRB through a presentation (GRB-57-28) on the work progress of the European Union (EU) institutions on the EC proposal on vehicle noise. He showed that the European Parliament, at its plenary session, improved the EC proposal with the possibility of rounding the noise measurement values and using lower test acceleration (2 m/s2). He announced a further update for the September 2013 session of GRB and invited other Contracting Parties to provide information on the implementation of new noise limits at their national/regional level.

9. The expert from Switzerland introduced an analysis of the Swiss database based on vehicle noise tests (GRB-57-23) conducted in conformity to the 02 series of amendments to the UN Regulation and on limit values proposed by the experts from Germany, Japan and EC. GRB agreed to resume discussion on this subject at its September 2013 session and recommended experts to provide detailed comments.

10. GRB agreed to establish a group of interested experts on vehicle noise, led by the expert from EC, with the main goal of (i) finalizing a common proposal on vehicle classification (including subcategories) and (ii) update a proposal of 03 series of amendments to UN Regulation No. 51 aiming at maintaining consistency with the EU legislation proposal. The schedule of the first meeting of the group was agreed for 19 April 2013, tentatively in Brussels. Finally, GRB agreed to keep as reference in the agenda of the next session informal documents GRB-54-03, GRB-57-07, GRB-57-19 and GRB-57-23 and to resume discussion on the basis of the outcome of the meeting of the group of interested experts.

11. GRB noted that no new information had been given under this agenda item.

12. The expert from CLEPA introduced a proposal (GRB-57-27) for amendments to the UN Regulation aimed at introducing ASEP provisions. GRB agreed to defer discussion on this subject to its September 2013 session and requested the secretariat to distribute GRB-57-27 with an official symbol at that session.

13. GRB noted that no new information had been given under this agenda item.

14. GRB considered ECE/TRANS/WP.29/GRRF/2013/9 for the next session of the Working Party on Brakes and Running Gear (GRRF). The document proposes wet grip provisions and testing procedures for tyres of categories C2 and C3. GRB endorsed ECE/TRANS/WP.29/GRRF/2013/9 without amendments.

15. GRB resumed discussion on ECE/TRANS/WP.29/GRB/2012/11, amended by GRB-57-03. The expert from EC expressed reservation on the term of differential lock that could lead to misconception. GRB endorsed the reservation of the expert from EC and agreed to inform GRRF.

16. The expert from ETRTO introduced ECE/TRANS/WP.29/GRB/2013/5, drafted in cooperation with the experts from Poland and the United Kingdom, proposing to update the test track requirements to ISO 10844:2011 as a supplement to the UN Regulation rather than a new series of amendments. He stated that the new test track with tighter tolerances would maintain the same nominal noise behaviour and that its introduction as a new series of amendments was not justified (GRB-57-02). The experts from France endorsed the proposal and stated that technical variations introduced by the new track would not justify a new series of amendments. The experts from Italy and Japan also endorsed ECE/TRANS/WP.29/GRB/2013/5.

17. GRB finally adopted ECE/TRANS/WP.29/GRB/2013/5 (superseding ECE/TRANS/WP.29/GRB/2013/2, ECE/TRANS/WP.29/GRB/2012/15 and ECE/TRANS/WP.29/GRB/2012/18) as reproduced in Annex II to this report. The secretariat was requested to submit the proposal to WP.29 and AC.1 for consideration and vote at their June 2013 sessions as draft Supplement 4 to the 07 series of amendments to UN Regulation No. 117. Moreover, GRB agreed that extensions of type approvals, granted by using the test track in accordance to ISO 10844:1994, may be carried out with the test track built in accordance with ISO 10844:2011, taking into account that this last would not negatively affect type approval noise test results.

18. The expert from the Russian Federation introduced ECE/TRANS/WP.29/GRB/2013/3, amended by GRB-57-01, proposing the use of a “Deceleration Calculator” software for the deceleration test method in the test procedure for measuring rolling resistance. He informed GRB about the variant of data processing in the rolling resistance deceleration test method basing on the dω/dt formula. He underlined that this variant was used as an alternative to the existing data processing stipulated in UN Regulation No. 117, not affecting the existing test methods, and that it fully matches ISO 28580 and the procedures of Annex 6 of UN Regulation No. 117. The “Deceleration calculator” is a mathematical tool providing high accuracy [σ < 0.001%; R2 > 0.999] of development in the experimental data. The concept dω/dt was incorporated into standard GOST R 52102.1 He also introduced GRB-57-25 to provide a background history on the development of legislation on rolling resistance and made a practical demonstration of the proposed “Calculator”.

19. GRB recommended that experts start using the proposed calculator and to provide comments at its September 2013 session. The expert from the Russian Federation was recommended to provide, in the meantime, further background information on the algorithms of the calculator and on both proposals (ECE/TRANS/WP.29/GRB/2013/3 and GRB-57-01), as well as demonstration at the next session of GRRF for an exchange of views.

20. Concerning the concept of a new tyre contained in the scope of the UN Regulation, the expert from ETRTO stated that “a new tyre means a tyre which has been never used nor subjected to retreading operation and arriving directly from the production process”. GRB endorsed this concept.

22. GRB noted that no new information had been given under this agenda item.

24. The expert from OICA introduced GRB-57-16, proposing the concept of extension and revision of approvals into UN Regulations Nos. 28, 51, 59 and 117. As suggested by the Chair of GRB, it was agreed to list this item on the agenda of the Administrative Committee for the Coordination of Work of WP.29 (WP.29/AC.2) at its March 2013 session, due to its implication for the entire range of UN Regulations annexed to the 1958 Agreement. Finally, GRB agreed to resume discussion on this subject at its September 2013 session and invited its experts to provide comments to the expert from OICA in time to prepare an official proposal for that session.

25. GRB noted that no new information had been given under this agenda item.

26. The expert from EC informed GRB that the European Parliament had called for efforts on optimizing road surfaces to reduce noise and on introducing noise labels for the roads and vehicles, similar to the tyre label. He announced further information on this subject at the September 2013 session of GRB.

29. The experts from IMMA and OICA introduced GRB-57-12 and GRB-57-18, listing the current acronyms and abbreviation in UN Regulations under the responsibilities of GRB. GRB agreed to resume discussion at its September 2013 session on the basis of informal documents provided by the expert from CLEPA concerning UN Regulations Nos. 59 and 28, and by the expert from EC concerning QRTV.

30. The expert from the Russian Federation gave a presentation (GRB-57-26) to introduce revised proposals (GRB-57-08, GRB-57-09, GRB-57-10 and GRB-57-11) superseding ECE/TRANS/WP.29/GRB/2012/12. The expert from OICA raised a study reservation on GRB-57-08, aimed at specifying how to test road tractors with or without semitrailers and to refer them to the off-road category of vehicle. GRB agreed to resume discussion on this subject on the basis of a revised proposal tabled by the Russian expert from Russia in cooperation with the experts from France and OICA.

37. Learning that Mr. R. Falk (United Kingdom) and Mr. B. Kortbeek (The Netherlands) would no longer participate in future sessions of GRB, the group acknowledged their valuable contribution to the work of GRB and wished them all the best in their future activities.

Working Party on Noise | Session 59 | 28-30 Jan 2014

1. The Working Party on Noise (GRB) held its fifty-ninth session from 28 (afternoon) to 30 (morning) January 2013 in Geneva. The meeting was chaired by Mr. S. Ficheux (France). Experts from the following countries participated in the work following Rule 1(a) of the Rules of Procedure of the World Forum for Harmonization of Vehicle Regulations (WP.29) (TRANS/WP.29/690, Amend.1 and Amend.2): Belgium; China; France; Germany; Hungary; India; Italy; Japan; Latvia; Netherlands; Norway; Russian Federation; Serbia; South Africa; Spain; Sweden; Switzerland; Turkey; United Kingdom of Great Britain and Northern Ireland. Experts from the European Commission (EC) participated. Experts from the following non-governmental organizations also participated: European Tyre and Rim Technical Organisation (ETRTO); International Motorcycle Manufacturers Association (IMMA); International Organization for Standardization (ISO); International Organization of Motor Vehicle Manufacturers (OICA) and World Blind Union (WBU).

2. GRB considered and adopted the agenda (ECE/TRANS/WP.29/GRB/2014/1 and Corr.1) proposed for the fifty-ninth session with the new agenda items 16(a) “Regulation No. 28 (Audible warning devices)”, 16(b)“Exchange of views for the future programme of work of GRB” and 16© “Provisional agenda for the sixtieth session”.

3. GRB resumed consideration of ECE/TRANS/WP.29/GRB/2012/5, tabled by the expert from the Russian Federation. The expert from IMMA stated that, although he supports the objective of correct usage of the terms “noise” and “sound” as well as clarifications in terminology related to noise reduction systems, IMMA wishes to avoid confusion with different application of these terms in UN Regulations Nos. 9, 41, 63 and 92, if the proposed amendments were approved. He added that in regards to the proposed reference in the type approval documentation to the type of catalyst, he was awaiting from the Russian experts the evidence in test results showing the influence of the catalyst type on the level of noise of L category vehicles.

4. The expert from the Russian Federation referred to his informal discussion with IMMA, where it was concluded that it would be more appropriate to introduce the amendments similar to those presented in ECE/TRANS/WP.29/GRB/2012/5 together in all UN Regulations related to noise of L category vehicles and to incorporate such amendments together with other proposals which are expected to be prepared following the development of the relevant legislation of the European Union. Taking this into account, the expert from the Russian Federation withdrew ECE/TRANS/WP.29/GRB/2012/5 for the time being, bearing in mind the introduction of similar proposals into all UN Regulations related to L category vehicle noise in the future.

5. GRB resumed discussion on the issue of transitional provisions, as contained in GRB-58-11-Rev.1, aligning the earlier adopted draft Supplement 1 to the 04 series of amendments to UN Regulation No. 41 (ECE/TRANS/WP.29/GRB/57, Annex II) to the General Guidelines for UN Regulatory Procedures and Transitional Provisions in UN Regulations (ECE/TRANS/WP.29/1044/Rev.1). GRB agreed to wait for the revision of the 1958 Agreement which would also introduce new rules for transitional provisions. Meanwhile, GRB agreed to keep this issue as a reference in its agenda for the future sessions.

6. The Chair of GRB proposed to transform the expert group on UN Regulation No. 51 into an informal working group (IWG) by preparing and adopting its Terms of Reference (ToR) which should focus on harmonizing the current proposal of 03 series of amendments to UN Regulation No. 51 with the provisions of the proposal of the Parliament and the Council of EU1, as well as including additional aspects concerning the Chinese and Japanese markets. To this end, a working document would be drafted by the IWG for consideration by GRB at its sixtieth session. The IWG should also address additional amendments by preparing an informal document for consideration by GRB at its sixtieth or sixty-first sessions. The experts from France, Germany, Netherlands and EC supported this initiative. It was suggested that ToR should also cover UN Regulation No. 59 (Replacement silencing systems). The experts from France, Germany, Japan, Netherlands, Spain, Switzerland, United Kingdom, EC, CLEPA, ETRTO and OICA announced their intention to participate to the work of the IWG. Finally, based on a draft prepared by the Expert Group, GRB adopted the ToR (GRB-59-10-Rev.1), of the IWG on UN Regulation No. 51 and UN Regulation No. 59, as reproduced in Annex II to this report, subject to WP.29 consent.

1The “Proposal for a Regulation of the European Parliament and of the Council on the sound level of motor vehicles” (2011/0409 (COD)) and related documents are available on the EC Enterprise web site: Reference documents – Legislative proposals: Sound level of motor vehicles. However, the last revision of this document was still in process as of this GRB session and not yet available to the public.

7. The expert from EC informed GRB about the work progress of the EU regulation on the noise emission and introduced a revised proposal for the 03 series of amendments to Regulation No. 51 submitted by the GRB Expert Group on UN Regulation 51 (GRB-59-04-Rev.1). He clarified that the proposal was based on GRB-58-17-Rev.1, outcome of the GRB expert group meeting and on the latest update of the EU regulation. He clarified that one of the major modifications introduced was the deletion of Annex 11 on the Audible Vehicle Alerting System (AVAS) which should become part of the UN GTR on Quiet Road Transport Vehicles (QRTV) and come into force in due course. The experts from EC and OICA pointed out the difficulties in aligning the texts of the draft EU regulation on the noise emission and UN Regulation No. 51, due to different definitions and legal languages used.

8. The experts from Germany, Japan, Netherlands, Switzerland, EC, ETRTO, OICA as well as the Chair addressed the issue whether or not to delete the footnote after the table with sound level limits in paragraph 6.2.2.1. of GRB-59-04-Rev.1 which refers to the last column “Phase 3” and reads as follows: “To be reviewed and confirmed or modified at the latest one year after entry”. GRB noted that this provision corresponds to Article 7 of the draft EU regulation on the noise emission and aims to review the appropriateness of the noise limits in the future. However, the legal implications of the footnote seemed unclear. GRB invited the expert from EC to clarify this issue with the EU legal services. In the meantime, GRB agreed to put the footnote in square brackets and resume consideration at a later stage. GRB also extensively discussed the wording of paragraph 6.2.2.1 (sound limit values and categories of vehicles) introducing exceptions for limit values applicable to certain categories of vehicles.

9. GRB resumed consideration of the limit values for certain vehicle categories on the basis of a presentation by the expert from Japan (GRB-59-09) on flat front light vehicles of category N1. The experts from France, Germany, Italy and OICA supported GRB-59-09. The expert from EC stated that a common EU position on this issue, as well as on M3 buses, was expected at the beginning of 2014.

10. Thus, GRB recalled GRB-58-08, GRB-58-09 and GRB-58-10 tabled by the expert from China in which he suggested higher limit values for vehicles of a specific category on the Chinese market. Referring to the above proposal by Japan, GRB invited the expert from China to explain and further justify his proposal in a similar way, possibly at the next sessions of the IWG on UN Regulation No. 51 and UN Regulation No. 59 in March and May 2014. GRB agreed to refer GRB-59-04-Rev.1 to the IWG incorporating all the changes agreed during the session, including GRB-59-09. GRB also agreed to resume discussion on the 03 series of amendments at its September 2014 session on the basis of an official proposal submitted by the IWG.

11. GRB adopted ECE/TRANS/WP.29/GRB/2014/2, not amended, tabled by the expert from OICA to update the requirements on the noise test track from ISO 19844:1994 (i.e. Annex 8 of this Regulation) to ISO 10844:2011, as well as to incorporate transitional provisions to allow repaving of existing, non-complying test tracks with the ISO 10844:2011 standards. The secretariat was requested to submit ECE/TRANS/WP.29/GRB/2014/2 to WP.29 and the Administrative Committee of the 1958 Agreement (AC.1), for consideration and vote at their June 2014 sessions as draft Supplement 10 to the 02 series of amendments to Regulation No. 51.

12. GRB resumed discussions on ECE/TRANS/WP.29/GRB/2013/4 and GRB-57-13 proposing amendments to improve the test method of the 02 series of amendments to the UN Regulation, as well as an amendment to the acceleration test value proposed by the expert from China in GRB-58-07. GRB noted that the Chinese concerns had been taken into account by ISO Working Group 42 when revising Standard ISO 362-1:2007, referred in the current test method of the UN Regulation. The expert from China withdrew ECE/TRANS/WP.29/GRB/2013/4, GRB-57-13 and GRB-58-07 and announced a possible future proposal as a result of further exchange of views with ISO.

13. GRB noted that this agenda item was de facto covered in the framework of the discussion under agenda item 3(a). Thus, GRB agreed that, for its next session, agenda items 3(a) and 3 (b) should be combined and mention as references only GRB-59-04-Rev.1 and GRB-59-10-Rev.1. Finally, GRB agreed to remove ECE/TRANS/WP.29/GRB/2012/7, GRB-58-08, GRB-58-09, GRB-58-10, GRB-58-14 and GRB-58-17-Rev.1 from the agenda of the next session.

14. GRB recalled its intention to review the Additional Sound Emission Provisions (ASEP) and to refine the purpose of the new noise limit values (ECE/TRANS/WP.29/GRB/52, paras. 8–9). As no new information had been given under this agenda item, GRB agreed to keep it on the agenda for the next session.

15. In the absence of the expert from CLEPA, GRB agreed to defer discussion on this subject to its September 2014 session and to keep ECE/TRANS/WP.29/GRB/2013/8 and GRB-58-05 as references in the agenda of the next meeting, awaiting the outcome of discussion of the IWG on UN Regulations Nos. 51 and 59.

16. No new information was given under this agenda item.

17. The experts from France, the Russian Federation and ERTRO informed GRB (GRB-59-07 and GRB-59-08) about the outcome of their ad hoc meeting on testing the “Deceleration Calculator” software proposed by the Russian Federation for the deceleration test method using the dω/dt form for measuring rolling resistance. GRB noted that the ad hoc meeting had been hosted by the Technical Union for the Automobile, Motorcycle and Cycle Industries (UTAC), and generally included both theoretical justification of the method and its experimental assessment by determining rolling resistance of a sample tyre of class C1 using two test machines of different types. GRB also noted that the obtained data, its processing and statistical assessment had demonstrated good adaptability of the software to the tyre test machines and satisfactory reproducibility of deceleration data. Moreover, the algorithm of the “Deceleration Calculator” practically provides independence of the measured deceleration from the test speed range in span from 4 to 20 km/h.

18. Therefore the expert from the Russian Federation proposed GRB-59-02 superseding ECE/TRANS/WP.29/GRB/2013/10, as an alternative for measurements and data processing for deceleration value obtaining in differential form dω/dt.

19. GRB agreed in principle with the proposed method. However, given the late availability of GRB-59-02, GRB suggested that this document, accompanied by other supporting materials (GRB-59-07 and GRB-59-08), be first submitted to the forthcoming February 2014 session of GRRF for discussion and then, together with GRRF comments, transmitted as an official document to the next GRB session in September 2014 for final consideration. In the meantime, it was noted that results of testing tyres of commercial vehicles (classes C2 and C3) could also become available for that session of GRB. Finally, GRB invited experts to provide comments, if any, to the secretariat before the next GRB session.

20. The expert from ERTRO introduced GRB-59-03 containing a revised proposal for new time measurement accuracy for instrumentation involved in the rolling resistance method, with the aim to correct inconsistencies in Annex 6 to the UN Regulation. The proposal text was also supported by the experts from the Russian Federation. The expert from Japan raised a study reservation to verify the consequences of the change of accuracy. The expert of the European Commission raised similar concerns and stated that he would need first to discuss this matter with ERTRO on a bilateral basis. GRB agreed to resume consideration on this subject at its September 2014 session and requested the secretariat to distribute GRB-59-03 with an official symbol

21. The expert from EC informed GRB that EU intended to apply to these Regulations, but would need additional research, in particular with regard to tampering of silencers. To this end, a study would be launched before the next session of GRB in September 2014. Pending EU contributions, GRB decided to keep this issue on the agenda. The expert of IMMA made note that anti-tampering provisions were already introduced in the last amendments of these UN Regulations. Finally, GRB agreed to change the title of this agenda item to “additional provisions”, to distinguish it from agenda item 3© and to resume discussion on this subject at its September session on the basis of new information provided by the expert from EC.

22. GRB agreed to delete this item to the agenda of its next session [and/or] until a new proposal by the expert from OICA was submitted.

23. GRB noted that no new information had been given under this agenda item.

24. GRB welcomed a presentation by the expert from the Foundation for Scientific and Industrial Research (SINTEF, Norway) outlining the first results of a study concerning the
influence of the road surface on tyre rolling sound emission. The expert from SINTEF clarified that the main objective of the project was to investigate the noise performance of normal passenger car tyres on typical road surfaces in the Nordic countries (Denmark, Norway and Sweden) and to clarify which combinations of road surfaces and tyres will yield the lowest tyre/road noise levels. GRB noted that the results of this investigation had demonstrated the variation in noise levels of tyres around 4 dB(A) and the same variation between average of road surfaces. It was also noted that the difference between the most noisy tyre on the most noisy surface and the most quiet tyre on the quietest road surface had been found to be 11 dB(A). Finally, the expert from SINTEF informed GRB that during 2014, the project would be extended to truck tyres.

25. The expert from EC, secretary of IWG for QRTV, informed GRB about the outcome of its last meeting held in Tokyo (10 – 12 December 2013). He also announced that the next meetings of the IWG were scheduled to take place from 7 to 9 April as well as from 13 to 15 May, 2014 in Washington, D.C. He clarified that the IWG activities were focused on cleaning up the draft text of the UN GTR on QRTV as well as on addressing technical and policy issues. The expert from EC thus invited GRB experts from Contracting Parties to the 1998 Agreement to provide before April 2014 their comments on the various policy options, provided by a working paper of the IWG (AVAS conditions 27.01.14). GRB also noted the decision of the Executive Committee of the 1998 Agreement (AC.3) (see ECE/TRANS/WP.29/1106, para. 106) to extend the mandate of IWG until November 2015. Therefore, GRB expected to discuss a concrete proposal at its next sessions in September 2014 and January 2015.

26. The expert from WBU highlighted three key elements of AVAS, from the point of view of people with impaired vision: (i) alert sound should be of a sufficient volume and its composition (frequency, etc.) should allow for location and movement of the vehicle; (ii) the system should be active on stationary vehicles; and (iii) the driver should not be in a position to switch it off, as this safety feature should be active all the time. The expert from EC informed GRB that the EU Regulation on noise would require an automatic setting of AVAS and since this Regulation was at the latest stage of the co-decision process, this provision would hardly change. The Chair of GRB clarified that the pause-switch function would be part of the discussion of GRB. He added that the provisions of the UN GTR should conjugate the safety effectiveness of AVAS and the reduction of parasite noise. Finally, GRB agreed to resume discussion on this subject at its September 2014 session.

27. GRB resumed consideration of definitions and acronyms in UN Regulations and UN Global Technical Regulations under the responsibility of GRB on the basis of GRB-57-12 and GRB-57-18. The Chair of GRB stressed the importance of preparing a full and consistent list of acronyms and abbreviations with a view to avoiding any ambiguity in this area. It was agreed that this list covering both the 1958 and 1998 Agreements would then be submitted to WP.29 for approval and would be updated from time to time. GRB reiterated its invitation to all experts to provide their contributions, if any, so that the final document could be approved at the September 2014 session of GRB.

28. GRB considered document GRB-59-01 in which the secretariat proposed to correct the reference to Annex 3 of UN Regulation No. 41 in paragraph 8.8.2.1.2. of the Consolidated Resolution (R.E.3) as well as to draw the attention of the Working Party to the fact that the margin of 5 dB(A) defined in paragraph 8.8.2.2., in order to take into account the possible instrumental and measurement errors, substantially exceeds the respective margins of 1 or 3 dB(A) set out in Regulations No. 51, 41 and 63. The experts from France, Germany, Sweden, IMMA, ISO and OICA pointed out that the figure of 5 dB(A) in paragraph 8.8.2.2. takes into account the disturbances and scatter of measurements performed under real-life conditions, in uncertain acoustic environment (e.g. side of a road) and by untrained staff (e.g. road police), while the margin of 3 dB(A) is intended for laboratory conditions and trained staff. GRB decided to leave the figure of 5 dB(A) in paragraph 8.8.2.2. of R.E.3 unchanged.

29. Finally, GRB considered ECE/TRANS/WP.29/GRB/2013/9 tabled by the expert from the Russian Federation. GRB agreed, as proposed by the expert from IMMA, to delete, in the new paragraph 8.8.2.1.2., the references to new categories of vehicles L 6 and L 7 which are not yet covered by UN Regulation No. 9. Finally, GRB adopted ECE/TRANS/WP.29/GRB/2013/9, as amended by Annex III to this report. The secretariat was requested to submit it to WP.29 and AC.1 for consideration and vote at their June 2014 session as draft Amendment 5 to R.E.3.

30. GRB noted the good progress made by the WP.29 IWVTA informal groups on the Revision of the 1958 Agreement (SG58) and on the development of UN Regulation No. 0 (SGR0) at their recent informal meetings held in Sendai (Japan) in January 2014. It was noted that SG58 considered the unresolved issues (kept in square brackets) of the draft Revision 3 to the 1958 Agreement (ECE/TRANS/WP.29/2014/26) and had agreed on the final text. The final text of the draft Revision 3 to the 1958 Agreement will be submitted to WP.29 for consideration at its March 2014 session, on the basis of an informal document supplementing the official document.

31. SGR0 finalized a first draft of UN Regulation No. 0 on IWVTA, which will be presented at the forthcoming session of WP.29 in March 2014 as an informal document. GRB noted that UN Regulations Nos. 28, 51 (either in its current form or 03 series of amendments) and 117, would be included in IWVTA. Concerning the need to develop a new UN Regulation dedicated to tyre installation, GRB noted that this issue would be dealt with by GRRF. Finally, the Chair of GRB suggested that the following experts sponsor the above-mentioned UN Regulations in the IWVTA: (i) CLEPA (UN Regulation No. 28), (ii) OICA (UN Regulation No. 51) and (iii) ETRTO (UN Regulation No. 117).

GRB decided to delete this issue from the agenda.

33. The Secretary reported on the highlights of the 161st session of WP.29 (ECE/TRANS/WP.29/1106).

34. The expert from OICA introduced GRB-59-06-Rev.1 to update the test conditions and provisions of UN Regulation No. 28: (i) to allow the test of the audible warning devices on the vehicle with its engine warmed-up and at idle and (ii) to reduce the prescribed sound level from 93 to 90 dB(A). He justified the second point because this reduced level was audible far enough to instantaneously warn pedestrians and other road users, including drivers, as it was typically 20 dB to 40 dB higher compared to typical traffic noise and could also contribute to lowering the noise pollution. The experts from Italy and ISO supported this proposal. The expert from France underlined that the whole text should be revised to update the test methods and that the limit proposed by OICA should be discussed. GRB agreed to resume discussion on this issue and requested the secretariat to distribute GRB-59-06-Rev.1 with an official symbol at its September 2014 session.

35. At Chair’s invitation, GRB had a brief exchange of views on issues which should be included in the future work of GRB. The expert from ISO pointed out that, to update the test methods set out in UN Regulations Nos. 41 and 51, the following ISO activities may be relevant: revisiting ISO 362-1:2007, development of part III of this standard with a specification how to perform tests in indoor facilities and updating the requirements on the noise test track from ISO 10844:1994 to ISO 10844:2011. The expert from France mentioned UN Regulation No. 51, ASEP, QRTV, ongoing technological improvements, indoor approvals, addressing sirens (ambulances, etc.) in UN Regulation No. 28, noise pollution caused by loading and unloading of deliveries in cities. The expert from the Netherlands presented a graph (GRB-59-11) showing a general improvement in tyre noise data for C1 tyres in 2007-2013 and informed GRB about his intention to bring similar graphs for C2 and C3 tyres for the attention of GRB at its next session, with the aim to study if the current noise limits for tyres can be further reduced. With support from the experts from EC and OICA, he also suggested studying the correspondence between the labelling system on tyres and their actual performance. The expert from Switzerland was of the opinion that noise pollution, its benchmarking and new technologies emerging on the market should be looked at. The expert from ERTRO proposed to address the issue of road surfaces, as the third main contributor to noise pollution after vehicles and tyres. However, the Chair and the expert from EC pointed out that this issue is very complex and it goes beyond the competence of GRB and type approvals. The expert of EC proposed to revisit the noise emission of agricultural vehicles and update the underlying test methods which had been developed 40 years ago.