Session 76 | Geneva | 17-21 Feb 2014
Attendance

1. The Working Party on Brakes and Running Gear (GRRF) held its seventy-sixth session from 17 to 21 February 2014 in Geneva. The meeting was chaired by Mr. B. Frost (United Kingdom). 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, ECE/TRANS/WP.29/690/Amend.1 and Amend. 2): Australia, Belgium, Canada, China, Czech Republic, Denmark, Finland, France, Germany, Hungary, India, Italy, Japan, Latvia, the Netherlands, Norway, Republic of Korea, Russian Federation, Slovakia, Spain, Sweden, Switzerland, South Africa, Turkey, the United Kingdom of Great Britain and Northern Ireland (UK) and the United States of America (USA). An expert from the European Commission (EC) also participated. Experts from the following non-governmental organizations (NGOs) participated: the European Association of Automotive Suppliers (CLEPA), the International Motorcycle Manufacturers Association (IMMA), the International Organization for Standardization (ISO), the European Tyre and Rim Technical Organisation (ETRTO) and the International Organization of Motor Vehicle Manufacturers (OICA). Upon the special invitation of the Chair the following non-governmental organizations (NGOs) participated:
International Association of the Body and Trailer Building Industry (CLCCR), the Federation of European Manufacturers of Friction Materials (FEMFM), Fédération Européenne de la Manutention (FEM) and Imported Tyre Manufacturers Association (ITMA).

1. Adoption of the agenda

2. GRRF considered and adopted the agenda prepared for the seventy-sixth session (ECE/TRANS/WP.29/GRRF/2014/1 and Add.1).

3. GRRF also adopted the running order for the session as proposed in GRRF-76-01 and the updated consolidated agenda GRRF-76-37-Rev.1, including all informal documents considered during the session.

4. The informal documents distributed during the session are listed in Annex I of the session report.

GRRF-76-01 | Running order of the provisional agenda for the 76th session of GRRF
GRRF-76-37/Rev.1 | Annotated provisional agenda for the 76th GRRF session Agenda updated by the GRRF secretariat with the latest informal document additions.
GRRF/2014/1 | Annotated provisional agenda for the 76th GRRF session
GRRF/2014/1/Add.1 | Addendum to the provisional agenda for the 76th GRRF session Annotations to the provisional agenda for the February 2014 GRRF session.
2. Advanced Emergency Braking Systems

5. The expert from OICA introduced GRRF-76-15, GRRF-76-16 and GRRF-76-17-Rev.1 proposing to insert a footnote in the scope of the original version of Regulation No. 131, the 01 series of amendments to Regulation No. 131 and Regulation No. 130, containing guidance or recommendations to the Contracting Parties applying these Regulations for potential exemptions.

6. Several Contracting Parties (CPs), felt that guidance could be useful; however others felt that it would not be appropriate to use a regulation to advise Contracting Parties on policy considerations. OICA agreed to consider other options for consideration by GRRF.

GRRF-76-15 | Proposal for Supplement 1 to the 00 series of amendments to Regulation No. 130 Proposal to include a footnote in the scope of the regulation alerting type approval authorities to the possibility for exemptions to the lane departure warning systems requirements based upon reasonable technical feasibility, cost/benefit, and/or other evidence. The broad notion is that LDWS is intended to prevent accidents due to inattention while driving long distances, especially on highways. Therefore, vehicles designed for purposes not given to such monotonous long-distance travel should, under this proposal, logically be exempted on a case-by-case basis from LDWS requirements.
GRRF-76-16 | Proposal for Supplement 01 to the 00 series of amendments to Regulation No. 131 Proposal to include a footnote in the scope of the regulation alerting type approval authorities to the possibility for exemptions to the automatic emergency braking systems requirements based upon reasonable technical feasibility, cost/benefit, and/or other evidence. The broad notion is that AEBS is intended to prevent accidents due to inattention while driving long distances, especially on highways. Therefore, vehicles designed for purposes not given to such monotonous long-distance travel should, under this proposal, logically be exempted on a case-by-case basis from AEBS requirements.
GRRF-76-17/Rev.1 | Proposal for Supplement 02 to the 01 series of amendments to Regulation No. 131 Proposal to include a footnote in the scope of the regulation alerting type approval authorities to the possibility for exemptions to the automatic emergency braking systems requirements based upon reasonable technical feasibility, cost/benefit, and/or other evidence. The broad notion is that AEBS is intended to prevent accidents due to inattention while driving long distances, especially on highways. Therefore, vehicles designed for purposes not given to such monotonous long-distance travel should, under this proposal, logically be exempted on a case-by-case basis from AEBS requirements.
3. Regulations Nos. 13 and 13-H (Braking)
3. (a) Electronic Stability Control (ESC)

7. This item was discussed in conjunction with agenda item 10(b), see para. 36. The expert from OICA introduced ECE/TRANS/WP.29/GRRF/2014/10 as amended by GRRF-76-18 proposing to delete the provisions related to the introduction of ESC and BAS in the two draft Regulations mentioned in para. 36. in favour of separate and discrete regulations for these technologies. GRRF agreed to resume consideration of this item and keep the documentation on the agenda of the September 2014 session of GRRF.

GRRF-76-18 | Addendum to document GRRF/2014/10 (Proposal to amend UN R13-H pursuant to the separate ESC/BAS regulations) Proposed amendments to UN R13-H to confirm that the complex electronic control system (CEL) requirements may be satisfied through an approval conducted under another regulation (e.g., the pending new ESC and BAS regulations) and to delete the marking requirement concerning ESC systems which will no longer be within the scope of UN R13-H.
GRRF/2014/10 | Proposal for amendments to Regulation No. 13-H Proposal for amendments to delete provisions for electronic stability and brake-assist systems from UN R13-H as part of their transposition into new stand-alone regulations.
3. (b) Automated Connections between Vehicles (ACV)

8. The Chair of the informal working group on ACV introduced GRRF-76-29 proposing follow-up actions for the ACV informal working group, on road trains. GRRF noted that this matter would interest both braking experts and mechanical coupling experts. GRRF supported GRRF-76-29 and requested a proposal for a Terms of Reference update for the informal group, which the chair of the informal group volunteered to prepare.

GRRF-76-29 | Proposed continuation of the work related to modular vehicle combinations Request from the chair of the former informal group on automated couplings between vehicles for a mandate to develop amendments to braking, steering, vehicle stability, couplings, and possibly other areas related to modular vehicle combinations either through a new working group or an existing one (e.g., the R55 informal group). The aim would be to enable type approval of components used in vehicle combinations.
3. (c) Clarifications

9. The Chair of GRRF recalled the purpose of ECE/TRANS/WP.29/GRRF/2013/13, adopted during the seventy-fifth GRRF session. The document remained on the agenda of GRRF, pending the submission of the adopted text to WP.29 and AC.1 for each Regulation.

GRRF/2013/13 | Proposal for collective amendments - Regulation Nos. 13, 13-H, 79, 89, and the LDWS and AEBS regulations Proposal for collective amendments of amendments to Regulations Nos. 13 (Heavy vehicle braking), 13-H (Brakes of M1 and N1 vehicles), 79 (Steering equipment) and 89 (Speed limitation devices) and the new Regulations on LDWS and AEBS to clarify the references to Regulation No. 10 into the UN Regulations mentioned above.

10. The expert from Germany introduced GRRF-76-24 based on ECE/TRANS/WP.29/GRRF/2013/29 and proposing amendments to Regulation No. 13 introducing provisions for electro-mechanical braking systems. GRRF acknowledged the status report and expected a revised proposal at its September 2014 session, addressing the remaining open issues, which the experts from Germany and the Netherlands volunteered to prepare.

GRRF-76-24 | Report on the status of work on the issue of electro-hydraulic systems Status report, including the current state of the draft text, on efforts to reach agreement on the introduction of provisions for electro-hydraulic systems into the test conditions for trailers with electrical braking systems.
GRRF/2013/29 | Proposal for amendments to UN Regulation No. 13 Text prepared by Germany to clarify electrical braking system and energy supply line requirements with regard to towed trailers, including proposals for voltage specifications and inclusion of electro-hydraulic transmission devices within such systems. The text also seeks to align terminology with comparable paragraphs in other UN Regulations.
3. (d) Braking symbols in Regulation No. 121 (Identification of controls, tell-tales and indicators)

11. The expert from UK reported on the outcome of the group of experts working on updated transitional provisions of UN Regulations Nos. 13 (GRRF-76-02) and introduced ECE/TRANS/WP.29/GRRF/2014/7. GRRF adopted this proposal as reproduced in Annex II to the session report and requested the secretariat to submit it to World Forum for Harmonization of Vehicle Regulations (WP.29) and the Administrative Committee of the 1958 Agreement (AC.1) for consideration at their June 2014 sessions as part of the draft Supplement 12 to the 11 series of amendments to UN Regulation No. 13.

GRRF-76-02 | Regulation 13: Transitional Provisions Presentation of the recommendations (see document GRRF/2014/7) of the expert group reviewing the transitional provisions of UN R13 pursuant to the decision to transfer the provisions on the electronic stability control (ESC) warning signal to UN R121 on controls and tell-tales. UN R13 contains 23 transitional provisions introduced to allow manufacturers to adapt to changes that have been made to the rule over time. The ad hoc expert group was formed to streamline these provisions by removing obsolete provisions and by applying uniform language.
GRRF/2014/7 | Proposal for amendments to Regulation No. 13 Proposal of the ad hoc expert group on transitional provisions to clarify and update these terms within the heavy braking regulation, including provisions for extensions of type approvals granted according to the antecedent requirements of the original approval. These amendments also relate to the transfer of brake-related telltale provisions to UN R121.

12. The expert from UK also reported on the outcome of the group of experts working on updated transitional provisions of UN Regulations Nos. 13-H (GRRF-76-04) and introduced ECE/TRANS/WP.29/GRRF/2014/16 as amended by GRRF-76-30. GRRF adopted this proposal as reproduced in Annex III to the session report and requested the secretariat to submit it to WP.29 and AC.1 for consideration at their June 2014 sessions as part of the draft Supplement 16 to UN Regulation No. 13-H.

GRRF-76-04 | Regulation 13-H: Transitional Provisions Presentation of the recommendations (see document GRRF/2014/16) of the expert group reviewing the transitional provisions of UN R13-H pursuant to the decision to transfer the provisions on the electronic stability control (ESC) warning signal to UN R121 on controls and tell-tales. UN R13 contains eight transitional provisions (five of which are obsolete) introduced to allow manufacturers to adapt to changes that have been made to the rule over time. The ad hoc expert group was formed to streamline these provisions by removing obsolete provisions and by applying uniform language.
GRRF-76-30 | Proposal for addendum to document GRRF/2014/16 (UN R13-H transitional provisions) Correction of errors in the proposal of the ad hoc expert group on transitional provisions to clarify and update these terms within the light braking regulation, including provisions for extensions of type approvals granted according to the antecedent requirements of the original approval. These amendments also relate to the transfer of brake-related telltale provisions to UN R121. The proposal notes the deletion of two pictograms referencing electronic stability controls (ESC).
GRRF/2014/16 | Proposal for amendments to Regulation No. 13-H Proposal of the ad hoc expert group on transitional provisions to clarify and update these terms within the light braking regulation, including provisions for extensions of type approvals granted according to the antecedent requirements of the original approval. These amendments also relate to the transfer of brake-related telltale provisions to UN R121.

13. At the request of the expert from Japan, GRRF agreed to take note that the consolidation of the transitional provisions does not change the interpretation of the current text of the Regulation (e.g. transitional provisions for supplements). GRRF agreed that the absence of the historical dates from the latest text simplified interpretation of the requirements for the purposes of issuing type approval. GRRF also noted that references to “registration” had been removed in favour of “national or regional type approval” as recommended by the guidelines in ECE/TRANS/WP.29/1044/Rev.1.

GRRF/2014/16 | Proposal for amendments to Regulation No. 13-H Proposal of the ad hoc expert group on transitional provisions to clarify and update these terms within the light braking regulation, including provisions for extensions of type approvals granted according to the antecedent requirements of the original approval. These amendments also relate to the transfer of brake-related telltale provisions to UN R121.
GRRF/2014/7 | Proposal for amendments to Regulation No. 13 Proposal of the ad hoc expert group on transitional provisions to clarify and update these terms within the heavy braking regulation, including provisions for extensions of type approvals granted according to the antecedent requirements of the original approval. These amendments also relate to the transfer of brake-related telltale provisions to UN R121.

14. GRRF agreed to note in this report the meaning of “according to the basis of the requirement that existed at the time of the original approval” in para. 12.5. of ECE/TRANS/WP.29/GRRF/2014/7. In this context, GRRF agreed that “the requirement that existed” refers to those requirements applied at that time, taking into consideration of the transitional provisions.

GRRF/2014/7 | Proposal for amendments to Regulation No. 13 Proposal of the ad hoc expert group on transitional provisions to clarify and update these terms within the heavy braking regulation, including provisions for extensions of type approvals granted according to the antecedent requirements of the original approval. These amendments also relate to the transfer of brake-related telltale provisions to UN R121.
3. (e) Other business

15. As a follow-up to ECE/TRANS/WP.29/GRRF/75, para. 14, the secretariat introduced GRRF-76-09 containing the draft revision 8 of UN Regulation No. 13. GRRF noted some comments and requested the secretariat to take them into account when issuing the Revision 8 to Regulation No. 13.

GRRF-76-09 | Consolidated draft revision 8 of Regulation No. 13 Complete draft of the new version of the regulation on heavy-duty braking prepared by the GRRF secretariat. This text includes Supplement 10 which clarifies the requirements in Annex 21 of UN R13 on the use of EVSC simulation, corrects a “copy and paste” mistake concerning a signature requirement made when copying text from Annex 11 into Annex 12, Appendix 4, and harmonizes UN R13 with the Federal Motor Vehicle Safety Standard FMVSS 135 on electric vehicle requirements with regard to the regenerative braking system (RBS).

16. The expert from the Russian Federation introduced GRRF-76-20, proposing a clarification of UN Regulation No. 13. GRRF adopted this proposal as reproduced below and requested the secretariat to submit the proposal to WP.29 and AC.1 for consideration at their June 2014 sessions as a part of the draft Supplement 12 to the 11 series of amendments to UN Regulation No. 13.

Footnote 12, amend to read:
“…more than 2 axles and hydraulic transmission), Class I, Class A and articulated vehicles of categories M2 and M3, N2 tractors for semi-trailer with a gross vehicle mass (GVM) between 3.5 and 7.5 tonnes…”

GRRF-76-20 | Proposal for amendment to Regulation No. 13 Proposal to clarify and align the text of UN R13 on heavy-duty braking with that of UN R107 on bus construction with regard to the exemption of articulated buses and coaches from the requirements for vehicle stability equipment. The text would specify that "Class I, Class A and articulated vehicles of categories M2 and M3" are exempted from the requirements.

17. The expert from CLEPA introduced GRRF-76-21. GRRF requested the secretariat to distribute this document with an official symbol at its September 2014 session.

GRRF-76-21 | Proposal for amendments to Regulation No. 13 Proposal to remove all references to Annex 10 from Annex 13 by transferring the provisions concerning vehicles with and without anti-lock braking systems to Annex 10.

18. The expert from CLEPA withdrew GRRF-76-31.

GRRF-76-31 | Proposal for amendments to Regulation No. 13 Proposal to delete the contents of Annex 9 on parking brake systems equipped with a mechanical brake-cylinder locking device due to obsolescence.
4. Regulation No. 55 (Mechanical couplings)

19. The expert from Germany introduced ECE/TRANS/WP.29/GRRF/2014/14 on behalf of the Chair of the informal working group on Regulation No. 55. GRRF requested clarifications on the changes to the standard ISO 7641/1-2012 when compared with the current regulated version. GRRF agreed to revisit this item at its next session.

GRRF/2014/14 | Proposal for Supplement 4 to the 01 series of amendments to Regulation No. 55 Text prepared by the informal group of experts on Regulation No. 55 to introduce amendments on requirements for movable couplings, increased range of application of remote controls to couplings similar to C50-X and G50-X, possible increase of characteristic values of standard couplings and to include of further requirements on the mounting of couplings.
5. Motorcycle braking
5. (a) Regulation No. 78

20. The expert from IMMA introduced ECE/TRANS/WP.29/GRRF/2014/5 and ECE/TRANS/WP.29/GRRF/2014/6 as amended by GRRF-76-19 and GRRF-76-36-Rev.1 proposing general clarifications to UN Regulation No. 78 and specific clarifications for the use of Combined Braking Systems (CBS). The proposals received some comments and the expert from IMMA consolidated these requested changes into a revised proposal (GRRF-76-45). The expert from India introduced GRRF-76-32 on three wheelers, which GRRF agreed to revisit on the basis of a revised proposal at its September 2014 session. GRRF requested the secretariat to distribute GRRF-76-45 with an official symbol at the September 2014 session.

GRRF-76-19 | Comments from the Netherlands on the document GRRF/2014/6 (concerning UN R78 on motorcycle braking) Explanation of Dutch concerns with the IMMA proposals on the measurement of brake efficiency and the use of a representative vehicle for testing.
GRRF-76-32 | India’s Comments on documents GRRF/2014/4 and /5 India supports the purpose of the amendments to GTR No. 3 (GRRF/2014/4) and UN R78 (GRRF/2014/5) to provide same safety in the case of a failure in CBS as that of the conventional system of the two independent brakes for two wheelers. However, India believes the application of the amendments to three-wheelers requires additional consideration. Therefore, in order to proceed with amendments concerning CBS for two-wheelers, India proposes changes to the proposed text in order to allow further consideration of three-wheelers.
GRRF-76-36/Rev.1 | Proposal for amendments to ECE/TRANS/WP29/GRRF/2014/5 Proposal to clarify the intent of the selected paragraphs to ensure that systems with with one service brake meet braking performance requirements using only that brake system (i.e, without any assistance from the secondary brake system). There had been an interpretation that for systems with two service brakes each brake had to meet the requirements which would result in higher stringency levels than intended by the requirement for single brake systems. The proposal also clarifies the parts of the braking system that should be considered with respect to hydraulic brake and mechanical transmissions and further clarifies that the test procedures are designed to simulate a brake failure rather than produce one.
GRRF-76-45 | Proposal for amendments to Regulation No. 78 Proposal to clarify provisions on the use of Combined Braking Systems (CBS) and make some additional editorial improvements. This document contains GRRF/2014/05, GRRF/2014/06, GRRF-76-36 Rev 1 and updated by the comments raised at the seventy-sixth GRRF session.
GRRF/2014/5 | Proposal for amendments to Regulation No. 78 Proposal from the International Motorcycles Manufacturer Association (IMMA) to introduce amendments clarifying the current text on the use of Combined Braking Systems (CBS) into UN R78.
GRRF/2014/6 | Proposal for amendments to Regulation No. 78 Updated proposal for a series of amendments to clarify a variety of requirements, notably concerning test surface requirements, ABS cycling, and peak braking coefficient measurements under UN R78.
5. (b) Global Technical Regulation No. 3

21. The expert from IMMA introduced on behalf of the sponsor, Italy, ECE/TRANS/WP.29/GRRF/2014/3 and ECE/TRANS/WP.29/GRRF/2014/4 as amended by GRRF-76-35-Rev.1, proposing similar amendments to those proposed for Regulation No. 78 (see para. 20, agenda item 5a). These proposals received comments and the expert from IMMA consolidated these requested changes into a revised proposal (GRRF-76-44). GRRF requested the secretariat to distribute GRRF-76-44 with an official symbol at its September 2014 session.

GRRF-76-35/Rev.1 | Proposal for amendments to ECE/TRANS/WP29/GRRF/2014/4 Proposal to clarify the intent of the selected paragraphs to ensure that systems with with one service brake meet braking performance requirements using only that brake system (i.e, without any assistance from the secondary brake system). There had been an interpretation that for systems with two service brakes each brake had to meet the requirements which would result in higher stringency levels than intended by the requirement for single brake systems. The proposal also clarifies the parts of the braking system that should be considered with respect to hydraulic brake and mechanical transmissions and further clarifies that the test procedures are designed to simulate a brake failure rather than produce one.
GRRF-76-44 | Proposal for amendments to Global Technical Regulation No. 3 Proposal to clarify provisions concerning the use of Combined Braking Systems (CBS) and for a series of amendments to clarify a variety of requirements, notably concerning test surface requirements, ABS cycling, and peak braking coefficient measurements. The proposal clarifies the terms “inoperative” and “disconnected”, introduces the “K-method”.
GRRF/2014/3 | Proposal for amendments to Global Technical Regulation No. 3 Updated proposal for a series of amendments to clarify a variety of requirements, notably concerning test surface requirements, ABS cycling, and peak braking coefficient measurements. The proposal clarifies the terms "inoperative" and "disconnected", introduces the "K-method" and the use of a representative vehicle based on UN R13-H.
GRRF/2014/4 | Proposal for amendments to Global Technical Regulation No. 3 Proposal from Italy to clarify provisions concerning the use of Combined Braking Systems (CBS) in GTR No. 3.
6. Regulation No. 90

22. The Chair of GRRF presented ECE/TRANS/WP.29/GRRF/2014/9 based on GRRF-75-18, discussed at the seventy-fifth GRRF session. The expert from CLEPA introduced GRRF-76-42-Rev.1 proposing an amendment to the scope of the Regulation as well as further minor clarifications. GRRF adopted this proposal as amended by Annex IV of the session report and requested the secretariat to submit the proposal to WP.29 and AC.1 for consideration at their June 2014 sessions as a part of the draft Supplement 2 to the 02 series of amendments to Regulation No. 90.

GRRF-75-18 | Proposal for amendments to Regulation No. 90 Proposal to improve the definition of "identical" parts as applied to replacement brake discs and drums and to introduce an "identical" part definition for brake linings.
GRRF-76-42/Rev.1 | Proposal for amendments to Regulation No. 90 Reformatted proposal to clarify that like original brake discs and drums, original brake lining assemblies & drum brake linings are also not subject to this regulation and to refine the definition of “m<sub>axle</sub>” as the “maximum technically” permitted mass of the axle in alignment with the definition in Annex 11-Appendix 1, Table 1 of UN R13.
GRRF/2014/9 | Proposal for amendments to Regulation No. 90 Proposal to improve the definition of "identical" parts as applied to replacement brake discs and drums and to introduce an "identical" part definition for brake linings. This documents supersedes document GRRF-75-18.
7. Tyres
7. (a) Global Technical Regulation on tyres

23. The expert from USA, referring to ECE/TRANS/WP.29/2013/63, reported on the progress made on unresolved issues before its potential adoption. GRRF noted that testing results on the wet traction test procedure from the USA would need to be evaluated before a recommendation could be made to refer the GTR for adoption by WP.29/AC.3. The Chair of GRRF indicated that he would provide a status update to WP.29 at the upcoming March session and ask for additional time to consider the USA research results. A second issue concerning the bead unseat test for which the expert from China had planned to offer a proposal was resolved when it was announced that China would accept the existing procedure in the GTR.

Note by the secretariat: WP.29 agreed (in March 2014) to hold an extraordinary GRRF session during the Thursday afternoon session of WP.29 on 26 June 2014 dedicated to this agenda item.

WP.29/2013/63 | Proposal for a global technical regulation on tyres Text of the new GTR on light vehicle radial tires as adopted by the Working Party on Brakes and Running Gear (GRRF) at its 74th session.
7. (b) Regulation No. 117

24. Recalling the purpose of ECE/TRANS/WP.29/2013/66, the Chair of GRRF stressed that WP.29 was expecting GRRF to conclude its deliberation about the wet grip limit values. The GRRF experts introduced their positions (GRRF-76-05, GRRF-76-07, GRRF-76-08, GRRF-76-11, GRRF-76-12, GRRF-76-26, GRRF-76-27, GRRF-76-28). The expert from the EC reported on the concerns expressed by the Directorate-General for Mobility and Transport of the European Commission (DG Move). GRRF confirmed the limit values proposed in para. 6.2.2. for Tyres of C2 category and agreed to amend the proposed limit values in para. 6.2.3. for Tyres of C3 category in ECE/TRANS/WP.29/2013/66. GRRF requested the secretariat to submit this amendment as reproduced in WP.29-162-05 to WP.29 and AC.1 for consideration at their March 2014 session.

24bis. The expert from the Russian Federation presented GRB-59-02 proposing a tyre rolling resistance test results evaluation using a mathematical algorithm, to be added as an alternative to the existing one in the text of the Regulation. He also presented the results of a validation study of the proposed algorithm for tyres of the C1 category performed in France, in cooperation with the Russian Federation (GRB-59-07 and GRB-59-08). GRRF noted that this proposal may be submitted by GRB to WP.29 as a supplement to UN Regulation No. 117. GRRF recommended further steps for a better understanding of the proposed method’s sensitivity, suggesting: (i) extending the validation study for tyres of categories C2 and C3 and (ii) verifying the application of the proposed alternative in the conditions of the conformity of production. The GRRF Chair invited the experts to provide their comments on the proposal to the GRB secretariat with a copy to the expert from the Russian Federation.

GRRF-76-05 | Japan comment for R117-02 C3 threshold Pursuant to discussions on setting uniform wet-grip requirements for C3 snow tires, Japan affirms that its national data supports a minimum wet-grip value of 0.65 (as proposed in document WP.29/2013/66: Proposal for Supplement 5 to the 02 series of amendments).
GRRF-76-07 | Proposal for amendments to ECE/TRANS/WP.29/2013/66 (Supplement 5 to the 02 series of Regulation No. 117) Proposal to maintain a wet grip index of 0.95 for class C2 normal tires and regular snow tires under the discussions to establish wet grip provisions and testing procedures for category C2 and C3 tires.
GRRF-76-08 | Proposal for amendments to ECE/TRANS/WP.29/2013/66 (Supplement 5 to the 02 series of Regulation No. 117) Proposal to maintain a wet grip index of 0.65 for class C3 normal tires and regular snow tires under the discussions to establish wet grip provisions and testing procedures for category C2 and C3 tires.
GRRF-76-11 | Proposal for amendments to ECE/TRANS/WP.29/2013/66 (Supplement 5 to the 02 series of Regulation No. 117) European Commission proposal for minimum wet grip limits on Class C3 tyres. The EC notes that the wet grip (G) index is intended as a precautionary measure that would set a minimum level already satisfied by products currently on the market. In anticipation of improvements in new tires, the EC proposes to add a notation "Wet grip index (G) ≥ 0.80 may be considered for new types of tyres 96 months after the entry into force date of Supplement 5 to the 02 series of amendments, based on robust field data and cost-effectiveness analysis."
GRRF-76-12 | Summary of the ad hoc meeting on R117 C2 and C3 tyres Wet Grip thresholds Report of the special meeting held in Paris on 21 November 2013 to discuss wet grip values for Class C2 and C3 tyres.
GRRF-76-26 | Proposal for Supplement 6 to the 02 series of amendments to UN Regulation No. 117 Proposal to elaborate on the concept of tyre deceleration (dω/dt) in the test procedures. The Russian Federation has developed a “Deceleration Calculator” for use in the UN R117 procedures. Following work by an ad hoc group (including NAMI, UTAC, and ETRTO) formed to review and validate this tool, Russia has prepared this new proposal, modifying the version (document GRB/2013/10) submitted at the last GRB session. The changes primarily concern the explanation of the tool rather than the basic mathematical equations.
GRRF-76-27 | Method of Deceleration Measuring and Data Processing for Tyre Rolling Resistance Determination Report of the ad‐hoc working group organized in accordance with the recommendation of the 58th GRB session to consider testing and evaluation of the variant method using the dω/dt form proposed by Russia.
GRRF-76-28 | Method of Deceleration Measuring and Data Processing for Tyre Rolling Resistance Determination Full report of the ad hoc group on the development of the method for determining tire rolling resistance using the variant dω/dt method.
WP.29-162-05 | Proposal for amendments to the draft Supplement 6 to the 02 series of amendments to Regulation No. 117 Submission of the wet grip limit values for Class C3 tires as agreed to within the Working Party on Brakes and Running Gear (GRRF). These values were originally proposed in document WP.29/2013/66.
WP.29/2013/66 | Proposal for Supplement 6 to the 02 series of amendments to Regulation No. 117 Text as adopted by the Working Party on Brakes and Running Gear (GRRF) at its 75th session based upon a proposal by the European Commission, France and ETRTO to introduce wet grip provisions and testing procedures for tyres of categories C2 and C3.
7. (c) Other business

25. The expert from ETRTO presented GRRF-76-25, supporting ECE/TRANS/WP.29/GRRF/2013/20 amended by GRRF-76-06 as well as ECE/TRANS/WP.29/GRRF/2013/22 [concerning UN R106] and proposing the insertion of All Terrain Vehicle (ATV) tyres in UN Regulation No. 75.

26. In response to the proposal above, the expert from IMMA presented GRRF-76-41 supporting the insertion of provisions for ATV tyres in UN Regulation No. 106. GRRF agreed to revisit this subject at it September 2014 session on the basis of a revised proposal that the experts from IMMA and ETRTO agreed to prepare.

GRRF-76-06 | Proposal for amendments to ECE/TRANS/WP.29/GRRF/2013/20 Proposal to extend the scope of the regulation to include vehicle categories L6 and L7 (quadricycles and all-terrain vehicles). Since the present scope refers only to L1 through L5, the proposal would replace this with "two- or three-wheel vehicles and quadricycles" and add that the regulation does not restrict the use of tires approved under the regulation to vehicles defined as category L.
GRRF-76-25 | AT tyres: What are they? Presentation concerning all-terrain tires pursuant to the proposal to include provisions under UN R75 to enable the type approval of such tires.
GRRF-76-41 | Proposal for amendments to document GRRF/2014/2 Editorial corrections by the ETRTO to its proposal to insert a new marking provision and under “categories of use”, a definition for construction application (industrial tractor) tyres into UN R106.
GRRF/2013/20 | Proposal for amendments to UN Regulation No. 75 Proposal to include ATV tires in the motorcycle and moped tire regulation in order to enable the type approval of tires designed to equip quadricycles covered by the new Regulation (EU) No. 168/2013 of 15 January 2013 on the approval and market surveillance of two- or three-wheel vehicles and quadricycles (L category vehicles). These tires may also equip some agricultural tractors (SbS vehicles) covered by the new EU Regulation.
GRRF/2013/22 | Proposal for amendments to Regulation No. 106 Text prepared by the European Tyre and Rim Technical Organisation (ETRTO) to remove All Terrain Vehicles (ATV) tires from UN Regulation 106 on agricultural tires.

27. The expert from ETRTO introduced ECE/TRANS/WP.29/GRRF/2014/2 as amended by GRRF-76-41, inserting a new marking and, under “categories of use”, a definition for construction application (Industrial tractor) tyres. GRRF adopted this proposal as amended by Annex V of the session report and requested the secretariat to submit it to WP.29 and AC.1 for consideration at their June 2014 sessions as a part of the draft Supplement 11 to Regulation No. 106.

GRRF-76-41 | Proposal for amendments to document GRRF/2014/2 Editorial corrections by the ETRTO to its proposal to insert a new marking provision and under “categories of use”, a definition for construction application (industrial tractor) tyres into UN R106.
GRRF/2014/2 | Proposal for amendments to Regulation No. 106 Proposal by the European Tyre and Rim Technical Organisation (ETRTO) to insert a new marking provision and, under "categories of use", a definition for construction application (Industrial tractor) tyres into UN R106.

28. The expert from ETRTO also introduced ECE/TRANS/WP.29/GRRF/2014/15 clarifying the marking requirements in Regulation No. 106. GRRF adopted this proposal, not amended, and requested the secretariat to submit it to WP.29 and AC.1 for consideration at their June 2014 sessions as a part of the draft Supplement 11 to Regulation No. 106.

GRRF/2014/15 | Proposal for amendments to Regulation No. 106 Editorial improvements to the wording of marking requirements, superseding document GRRF/2013/24.
8. Intelligent Transport Systems (ITS)

29. The Chair of GRRF announced the next ITS informal group session scheduled to be held in March 2014 in Geneva.

30. He invited a presentation from two experts from the EU research project on vehicle platooning “Companion”, (GRRF-76-43). GRRF welcomed the idea of the Chair to share information about innovations related to vehicles automations and self-driving vehicles. GRRF agreed to dedicate one permanent agenda item to this subject and requested the secretariat to explore possibilities to dedicate an (additional) session (half a day) to this subject.

[A Scania video on platooning has also been posted on the WP.29 website and can be accessed via this link.]

GRRF-76-43 | Cooperative dynamic formation of platoons for safe and energy-optimized goods transportation Presentation by the head of the EU-funded <a href="http://www.companion-project.eu/" target="_blank">COMPANION project</a> to test and validate heavy-duty vehicle-to-vehicle platooning technologies. The program is aimed at gathering real-world experience with heavy vehicles formation of and interaction with connected vehicle platoons.
9. Steering equipment
9. (a) UN Regulation No. 79

31. At the request of the author of ECE/TRANS/WP.29/GRRF/2014/8, GRRF agreed to defer this agenda item to its next session.

GRRF/2014/8 | Proposal for amendments to Regulation No. 79 Proposal to enable the approval of positive steering of trailers using energy supply and electrical control from the towing vehicle because standards applicable to energy supply connectors and digital information interchange have not been established.
9. (b) Lane Keeping Assist System (LKAS) and Parking Assist Systems (PAS)

32. The expert from Sweden introduced GRRF-76-10 reporting on a meeting of interested experts on LKAS. He concluded that he, together with the expert from Japan and other interested experts, would meet again with a view to producing an informal document proposing amendments to Regulation No. 79, defining provisions addressing the safety of LKAS.

GRRF-76-10 | Report of the Ad-hoc meeting on Lane Keeping Assist System (LKAS) in Paris Report of the 19-20 November 2013 special meeting to discuss whether to pursue a Japanese proposal to develop a new regulation for the approval of lane-keeping assist systems.
10. International Whole Vehicle Type Approval (IWVTA)

33. The Ambassador and the Chair of GRRF gave a short oral report on the activities of the IWVTA informal group and its subgroups.

34. The expert from OICA resumed the discussion that started during the seventy-fifth GRRF session on the proposal to separate the Tyre Pressure Monitoring System (TPMS) provisions from UN Regulation No. 64. GRRF agreed to resume consideration of this proposal at its next session on the basis of a written proposal, which the expert from OICA volunteered to prepare.

10. (a) Regulation on tyre installation

35. The expert from OICA introduced ECE/TRANS/WP.29/GRRF/2014/13, as amended by GRRF-76-39, proposing the wording of a draft regulation on the Tyre installation for M1 vehicles. The proposal received some comments and GRRF agreed to revisit this item on the basis of a revised proposal that the expert from OICA volunteered to prepare.

GRRF-76-39 | Proposal for amendments to document GRRF/2014/13 Amendments to the draft new regulation for the approval to tires installed on a vehicle in order to avoid overlap with UN R64 on spare tires.
GRRF/2014/13 | Proposal for a new Regulation on Tyre Installation Proposal for a new regulation for the approval to tires installed on a vehicle. This regulations is proposed for use within the International Whole Vehicle Type Approval system in order to ensure proper tire fitment on a vehicle under IWVTA evaluation. This document supersedes GRRF-75-20.
10. (b) Regulation No. 13-H

36. The expert from OICA introduced a proposal for a draft Regulation on Brake Assist Systems (ECE/TRANS/WP.29/GRRF/2014/11 amended by GRRF-76-14 and GRRF-76-33) and a proposal for a draft Regulation on Electronic Stability Control (ECE/TRANS/WP.29/GRRF/2014/12 amended by GRRF-76-13). Addressing the open question on how to deal with the original Annex 8 of Regulation No. 13-H, he presented GRRF-76-40 and the corresponding proposal amending the draft mentioned above (GRRF-76-22 and GRRF-76-23). GRRF agreed to resume consideration of this item and keep the documentation on the agenda of the September 2014 session of GRRF.

GRRF-76-13 | Proposal for amendments to document GRRF/2014/12 (Draft ESC Regulation) Proposal to specify that safety aspects of ESC systems can be assessed under this new regulation or under UN R13-H. The objective of the proposed wording is to avoid redundant certification of the complex electronic control systems (CEL) aspects of ESC according to both the proposed ESC regulation and UN Regulation No. 13-H (keeping unchanged the level of safety). The proposal would permit the applicant to show evidence that CEL compliance has already been achieved according to Annex 8 of UN Regulation No. 13-H as an alternative to demonstrating compliance with the CEL annex of the ESC regulation.
GRRF-76-14 | Proposal for amendments to document GRRF/2014/11 (Draft BAS Regulation) Proposal to specify that safety aspects of brake assist systems can be assessed under this new regulation or under UN R13-H. The objective of the proposed wording is to avoid redundant certification of the complex electronic control systems (CEL) aspects of ESC according to both the proposed BAS regulation and UN Regulation No. 13-H (keeping unchanged the level of safety). The proposal would permit the applicant to show evidence that CEL compliance has already been achieved according to Annex 8 of UN Regulation No. 13-H as an alternative to demonstrating compliance with the CEL annex of the BAS regulation.
GRRF-76-22 | Proposal for amendments to the draft regulation on Brake Assist Systems Proposal to amend the draft text for the proposed new regulation on BAS which would extract the BAS provisions from the current UN R13-H on light vehicle braking systems. The intention is to clarify the meaning of the text in places where it is ambiguous when taken out of the context of UN R13-H.
GRRF-76-23 | Proposal for amendments to the draft regulation on Electronic Stability Control Proposal to amend the draft text for the proposed new regulation on ESC which would extract the ESC provisions from the current UN R13-H on light vehicle braking systems. The intention is to clarify the meaning of the text in places where it is ambiguous when taken out of the context of UN R13-H.
GRRF-76-33 | Proposal for amendments to document GRRF/2014/11 (new BAS regulation) India noted an erroneous reference to "ESC" in the original document where "BAS" was clearly intended.
GRRF-76-40 | IWVTA Reference to CEL Annex in R13H-split, ESC and BAS Explanation of three options developed for handling the approval of electronic stability controls (ESC) and brake-assist systems (BAS) under regulaitons separate from UN R13-H (light vehicle braking) while fulfilling the requirements of complex electronic systems (CEL).
GRRF/2014/11 | Proposal for a new Regulation on Brake Assist Systems (BAS) Proposal to transfer brake assist system systems provisions out of UN Regulation 13-H and into a new stand-alone regulation. The proposal arises from a perceived need to simplify UN R13-H to facilitate its application within the proposed international whole vehicle type approval. This document supersedes document GRRF-75-14.
GRRF/2014/12 | Proposal for a new Regulation on Electronic Stability Control (ESC) Proposal to transfer electronic stability control systems provisions out of UN Regulation 13-H and into a new stand-alone regulation. The proposal arises from a perceived need to simplify UN R13-H to facilitate its application within the proposed international whole vehicle type approval. This document supersedes document GRRF-75-15.
11. 1997 Agreement

37. The Chair recalled that amendments to UN Rules Nos. 1 and 2 were under consideration by AC.4 at its March 2014 session.

12. Other business
12. (a) Highlights of the November 2013 session of WP.29

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

WP.29/1106 | Report of the World Forum/WP.29 on its 161st session
12. (b) Revision and extension of approvals

39. The Chair recalled the purpose of ECE/TRANS/WP.29/GRRF/2013/31 and recalled the work done by the informal group on IWVTA on this issue. GRRF agreed to delete this agenda item.

GRRF/2013/31 | Proposal for collective amendments to Regulations Nos. 13, 13-H, 30, 54, 55, 78, 79, and 90 Text prepared by the International Organization of Motor Vehicle Manufacturers (OICA) to introduce the concept of "revision of approvals" into the UN Regulations under GRRF responsibility in order to align the UN Regulations with the EU Whole Vehicle Type Approval Directive 2007/46/EC in order to ease the administrative burden for both manufacturers and approval administrations regarding the extension of existing approvals.
12. (c) Other business

40. The expert from the UK introduced GRRF-76-03 containing the list of acronyms contained in the UN Regulations under the responsibility of GRRF. The expert from the UK noted that “VSF” was used in GRRF as “Vehicle Stability Function” while in GRSP as “V. Seat Fixture”

41. The expert from Denmark reported on complaints received from road user’s and truck drivers associations stating that there can be too much air pressure transmitted to the semi-trailer resulting in unnecessary tell-tale activation and asked whether other experts received similar comments. GRRF agreed that more information was needed on this issue and invited experts to consider whether similar concerns existed in their national territories.

GRRF-76-03 | Abbreviations and Acronyms used in the UN Regulations of GRSP, GRRF (and other GRs) (1958 Agreement) Results from the project to review and eventually harmonized technical terms and abbreviations used across UN Regulations.