34. On behalf of the Chair of GRRF, the representative of the United Kingdom informed WP.29 about the results of GRRF during its eighty-first session (for more details see the report of the session ECE/TRANS/WP.29/GRRF/81).

27. The World Forum recalled the oral report of the Chair of GRRF given during the 168th session (ECE/TRANS/WP.29/1120, paras. 34-39) and approved the report.

3. GRRF also adopted the running order for the session as proposed in GRRF-81-01. The informal documents distributed during the session are listed in Annex I of the session report.

Draft text showing changes made to the GTR on tyres under Amendment 1 (which is primarily aimed at introducing provisions for tyre rolling resistance and performance in severe snow conditions).

30. The Chair of GRRF recalled the authorization to develop an amendment to GTR No. 16 (see ECE/TRANS/WP29/AC.3/42) and the sponsorship of the Russian Federation for this activity. The expert from the Russian Federation reported on the work done by the group of interested experts dealing with this amendment, introducing the draft amendment 1 to GTR No.16 in ECE/TRANS/WP.29/2016/2 as well as the report contained in ECE/TRANS/WP.29/2016/3. He explained that GRRF-81-02 contained additional information to show the amendments to the existing text of the GTR as well as the origin of the amended text. GRRF adopted both official documents above (and removed the square brackets in paras. 14 and 20 of ECE/TRANS/WP.29/GRRF/2016/3). GRRF requested the secretariat to submit them to WP.29 and AC.3 for consideration and vote at their June 2016 sessions.

Proposal to establish a uniform CoP inspection questionnaire to harmonize conformity of production administrative requirements across Contracting Parties under UN R90. The intent is to increase efficiency and lower costs due to the absence of mutual recognition of CoP certifications among approval authorities.

Updated version of the proposal to remove tables specifying general values for replacement discs and drums that are identical to the original (2.3.3.4) since such replacements must by definition have values identical to the corresponding original parts. The proposal also would change the maximum permitted thickness variation of discs for medium and heavy vehicles from 0.030 mm to 0.050 mm (the common OEM specification). This revised proposal clarifies that the proposal would revise the specifications for vehicles of categories M3, N3, O3 and O4 but retain the maximum permitted specification of 0.030mm for vehicles of categories M2 and N2.

25. The expert from CLEPA presented ECE/TRANS/WP.29/2016/22 based on GRRF-80-12 proposing amendments to provisions defined for equivalent brake discs and drums and a relaxation of the requirement on the thickness variation for interchangeable replacement discs or drums. The expert presented a revised proposal GRRF-81-04 limiting the thickness variation requirement modification to vehicles of category O2, O3, N3 and M3. The expert from Italy expressed his concern with the proposed requirement relaxation. After discussion, GRRF agreed on the revised document GRRF-81-04-Rev.1. GRRF adopted the proposal amended by Annex IV to the report and requested the secretariat to submit it to WP.29 and AC.1 for consideration at their June 2016 sessions, as Supplement 3 to the 02 series of amendments to Regulation No. 90.

Revised version of the proposal to remove tables specifying general values for replacement discs and drums that are identical to the original (2.3.3.4), taking into account comments received during the February 2016 GRRF session. The tables are considered superfluous since replacement parts identical to the original parts must by definition have values identical to the corresponding original parts. This proposal also would change the maximum permitted thickness variation of discs for medium and heavy vehicles from 0.030 mm to 0.040 mm (the common OEM specification). This has been changed from the previous proposal of 0.050 mm. This revised proposal clarifies that the proposal would revise the specifications for vehicles of categories M3, N3, O3 and O4 but retain the maximum permitted specification of 0.030mm for vehicles of categories M2 and N2.

25. The expert from CLEPA presented ECE/TRANS/WP.29/2016/22 based on GRRF-80-12 proposing amendments to provisions defined for equivalent brake discs and drums and a relaxation of the requirement on the thickness variation for interchangeable replacement discs or drums. The expert presented a revised proposal GRRF-81-04 limiting the thickness variation requirement modification to vehicles of category O2, O3, N3 and M3. The expert from Italy expressed his concern with the proposed requirement relaxation. After discussion, GRRF agreed on the revised document GRRF-81-04-Rev.1. GRRF adopted the proposal amended by Annex IV to the report and requested the secretariat to submit it to WP.29 and AC.1 for consideration at their June 2016 sessions, as Supplement 3 to the 02 series of amendments to Regulation No. 90.

Presentation highlighting the growing use of carbon-ceramic (CSiC) brake discs and the need to address these products under UN R90 given that the replacement discs regulation is founded upon conventional cast iron technologies.

26. The expert from CLEPA introduced GRRF-81-05-Rev.1 presenting the characteristics of Carbon – Ceramic brakes and proposing to introduce relevant provisions in the Regulation. After discussion, GRRF invited the expert from CLEPA to prepare an informal document proposing amendments to Regulation No. 90 that would include Carbon – Ceramics brakes for consideration at the next GRRF session.

Proposal from the informal group on UN Regulation No. 55 to introduce provisions for coupling applications in multi-vehicle combinations ( e.g. rigid truck + dolly + semi-trailer) presently not addressed by the regulation.

17. The expert from CLEPA also presented GRRF-81-06, proposing amendments to Regulation No. 55 in the case of Multiple Vehicle Combinations. GRRF as well as the IWG on MVC supported in principle the proposal and requested that the IWG on Regulation No. 55 prepares an official document for consideration at the next GRRF session.

Further refinements from the informal group on UN Regulation No. 55 to introduce provisions for modular vehicle combinations (e.g., rigid truck + semi-trailer + dolly). This proposal concerns a procedure to identify allowable combinations of performance values Dc and V for drawbar coupling equipment.

18. The expert from CLEPA introduced GRRF-81-07, proposing the procedure to identify allowable combinations of performance values Dc and V for drawbar coupling equipment. The expert from the UK noted that an editorial correction would be needed in paragraph 4.1.1. and proposed to assist the Secretary of the IWG to prepare an official document for consideration at the next GRRF session.

Quick review of the informal group’s anticipated schedule for completing its work on updating the regulation on mechanical couplings.

16. The expert from CLEPA, Secretary of the IWG on Regulation No. 55 presented GRRF-81-08 with a proposal for a work plan for the finalisation of the work as the mandate of the group was about to terminate. GRRF endorsed the work plan proposed in GRRF-81-08.

One of the outcomes of the work on updating UN R55 was the recognition that agricultural couplings present a set of challenges distinct from other vehicles. Therefore, Germany proposes the establishment of an informal working group to develop a new regulations (UN R55-A) to respond to the specific needs of agricultural vehicle couplings.

19. The expert from Germany introduced GRRF-81-09 proposing ToR for a new IWG on Agricultural Coupling that would remove the Agricultural Coupling provisions from Regulation No. 55 and would include them in a new Regulation. The proposal received some comments to limit the number of classes, as reproduced in GRRF-81-09-Rev.1. GRRF agreed with the proposal for a new IWG that would take into consideration the work done by the Task Force on Agricultural Couplings (GRRF-81-10). GRRF agreed in principle with the proposal of the expert from Spain proposing generic provisions to be defined, which could be used for the approval of specific agricultural coupling at the national level. The secretariat noted that GRRF-81-10 was based on a former version of Regulation No. 55 and proposed that the new IWG on Agricultural Coupling would take into consideration the latest version of Regulation No. 55. GRRF agreed that the expert from Germany would chair the IWG and that the expert from the Comité Européen des groupements de constructeurs du machinisme agricole (CEMA) would provide the secretariat of the group. GRRF requested that the IWG would first revise and clarify the ToR of the group.

One of the outcomes of the work on updating UN R55 was the recognition that agricultural couplings present a set of challenges distinct from other vehicles. This revised proposal takes into account comments received during the February 2016 GRRF session for the establishment of an informal working group to develop a new regulation (UN R55-A) to respond to the specific needs of agricultural vehicle couplings.

19. The expert from Germany introduced GRRF-81-09 proposing ToR for a new IWG on Agricultural Coupling that would remove the Agricultural Coupling provisions from Regulation No. 55 and would include them in a new Regulation. The proposal received some comments to limit the number of classes, as reproduced in GRRF-81-09-Rev.1. GRRF agreed with the proposal for a new IWG that would take into consideration the work done by the Task Force on Agricultural Couplings (GRRF-81-10). GRRF agreed in principle with the proposal of the expert from Spain proposing generic provisions to be defined, which could be used for the approval of specific agricultural coupling at the national level. The secretariat noted that GRRF-81-10 was based on a former version of Regulation No. 55 and proposed that the new IWG on Agricultural Coupling would take into consideration the latest version of Regulation No. 55. GRRF agreed that the expert from Germany would chair the IWG and that the expert from the Comité Européen des groupements de constructeurs du machinisme agricole (CEMA) would provide the secretariat of the group. GRRF requested that the IWG would first revise and clarify the ToR of the group.

19. The expert from Germany introduced GRRF-81-09 proposing ToR for a new IWG on Agricultural Coupling that would remove the Agricultural Coupling provisions from Regulation No. 55 and would include them in a new Regulation. The proposal received some comments to limit the number of classes, as reproduced in GRRF-81-09-Rev.1. GRRF agreed with the proposal for a new IWG that would take into consideration the work done by the Task Force on Agricultural Couplings (GRRF-81-10). GRRF agreed in principle with the proposal of the expert from Spain proposing generic provisions to be defined, which could be used for the approval of specific agricultural coupling at the national level. The secretariat noted that GRRF-81-10 was based on a former version of Regulation No. 55 and proposed that the new IWG on Agricultural Coupling would take into consideration the latest version of Regulation No. 55. GRRF agreed that the expert from Germany would chair the IWG and that the expert from the Comité Européen des groupements de constructeurs du machinisme agricole (CEMA) would provide the secretariat of the group. GRRF requested that the IWG would first revise and clarify the ToR of the group.

Proposal to clarify the provisions for the minimum heights of markings for tyres with nominal rim diameter codes ≥ 20 and nominal section width ≤ 235 and for tyres with nominal rim diameter codes < 20 and nominal section width > 235. In addition, the proposal aligns the table on minimum marking heights to correspond with the related figure by using lowercase letters to denote dimensions in both (currently, the figure uses lowercase, but the table uses uppercase).

36. The expert from ETRTO introduced GRRF-81-11 proposing amendments to the requirements for the arrangement of tyre markings of Regulation No. 54. The proposal received some suggestions to simplify the verification of the compliance with the arrangement requirements. GRRF invited the expert of ETRTO to submit a revised proposal for consideration at the next session of GRRF.

Proposal to

1. change measurement units for drum speed in Annex 7 from min^-1 to km.h^-1 to align the requirements with other tyre regulations;
2. correct wording from “speed category symbol” to “speed symbol” (as defined in para. 2.33);
3. correct wording from “load capacity index” to “load index” (as defined in para. 2.32);
4. correct a reference to para. 3.2.13. of the Regulation in Annex 7, Appendix 1;
5. correct a boundary value of load index in Annex 7, Appendix 1;
6. delete in paragraph 2.1 in Annex 7, the possibility to use the 2.0 m drum diameter to perform the endurance test; and
7. align the text of Annex 10 with Annex 7 of UN R117 pursuant to the adoption of Supplement 5 to the 02 series of amendments to that regulation.

39. The expert from ETRTO presented GRRF-81-12 proposing editorial corrections in Annex 7 and Annex 10 of the Regulation, to align the requirements with those of other tyre Regulations and on the provisions for tests performed on two metre test drums. GRRF requested the secretariat to distribute this document with an official symbol at the next GRRF session.

Document GRRF/2016/20 proposes to remove certain design restrictions that impede the application of new technologies, especially related to trailer power steering systems and the use of energy from the towing vehicle, including specification of the connector through which electrical energy is supplied in the proposal. Although this proposal was approved in principle at the 80th GRRF session, it was agreed that the proposal would be reviewed at the 81st GRRF to define an open value [X] in paragraph 2.1.1. of Annex 5. It has subsequently been concluded that this change to paragraph 2.1.1. is not needed. Therefore, this proposal removes the change to the paragraph from GRRF/2016/20.

48. The expert from CLEPA recalled, on behalf of CLCCR, the proposal ECE/TRANS/WP.29/GRRF/2016/20 previously adopted by GRRF with a scrutiny reservation. CLCCR reviewed the text in square brackets and proposed to delete it as proposed in GRRF-81-13. GRRF adopted the proposal as amended by Annex V to the report and requested the secretariat to submit it together with ECE/TRANS/WP.29/GRRF/2013/13 to WP.29 and AC.1 for consideration at their June 2016 sessions, as Supplement 5 to the 01 series of amendments to Regulation No. 79.

Presentation on French government views on the approval of automated steering at speeds above 10 km/h under UN Regulation No. 79. The principle recommendation is to restrict amendments to UN R79 to lateral vehicle control as speeds above 10 km/h while setting other work on more advanced capabilities (longitudinal + latitudinal, lane change, passing, etc.) for future separate regulations.

17. The representative of the United Kingdom, co-chairing the IWG on Intelligent Transport Systems (ITS), gave a status report on the Group’s activities. He reported that the IWG convened on Wednesday, 9 March 2016 from 2.30 to 5:15 p.m. with the following intervention:
a) The representative of Finland, Ambassador of the IWG on ITS/AD gave a status report of the activities of WP.1, see para. 89.
b) The technical secretary of the IWG presented a proposal with definitions of Automated Driving and on major horizontal issues and legal obstacles related to Automated Driving.
c) The IWG discussed a proposal for guidelines on measures insuring cybersecurity and data protection of connected vehicles and vehicles with automated driving technologies, submitted by the representatives of Germany and Japan.
d) The representative of France presented GRRF-81-14 advocating for a regulatory structure differing from the one chosen by the IWG on Automated Commended Steering Function (ACSF), noting that this approach could be followed in a second step.
e) The Chair of the ISO Technical Committee 22 on Road Vehicles presented the relevant activities of ISO related to automated driving technologies and indicated the existing collaborations with SAE International. The representative from ITU made a presentation on secure vehicle software updates. The IWG concluded that further coordination would be needed to ensure that the international organizations ITU and ISO could deliver complementary input for the work done at the World Forum on ITS/AD.

52. This agenda item was discussed together with the following agenda item. The secretariat noted the decision of their authors and GRRF to remove ECE/TRANS/WP.29/GRRF/2015/2, GRRF-79-04, GRRF-80-08 and GRRF-81-14 from the agenda, as the progress done under the following agenda item would cover the subjects covered by those documents.

4. The secretariat introduced GRRF-81-15, announcing that the next GRRF session would take place on 20-23 September 2016 and recalling that the deadline for the submission of official documents would be 24 June 2016.

66. The secretariat introduced GRRF-81-15 reporting on the highlights of the 167th session of WP.29 relevant for GRRF. For more information, please refer to the session report (ECE/TRANS/WP.29/1118).

Agenda updated to include informal documents submitted through January 29.

2. GRRF considered the agenda prepared for the eighty-first session and adopted it (ECE/TRANS/WP.29/GRRF/2016/1 and Add.1) as updated and reproduced in GRRF‑81‑16, including all informal documents received until the session’s starting date.

Proposal for a new UN Regulation based upon the provisions for tyre-pressure monitoring systems (TPMS) extracted from UN R64 in order to facilitate the application of UN R64 within the International Whole Vehicle Type Approval system. This proposal also seeks to take into account efforts to update US FMVSS requirements for TPMS.

59. The expert from EC proposed amendments (GRRF-81-17) to ECE/TRANS/WP.29/GRRF/2016/5 clarifying that the manufacturer has the obligation to design a TPMS system which shall detect underinflation under a wide range of driving conditions and not only in the conditions of the test procedures in Annex 3 of the Regulation. GRRF adopted with the proposal as amended (GRRF-81-17-Rev.1). GRRF noted that the agreed proposal would not modify the test procedures as described in Annex 3 of the Regulation. The expert from the Russian Federation and some type-approval authorities raised a question about general provisions in UN Regulations for which no procedure was defined to verify the compliance with these general provisions for manufacturers. GRRF suggested that WP.29 could have a general discussion on the compliance off the test procedures and could provide guidance to the WP.29 subsidiary bodies.

Revised version of the proposal, updated by the GRRF secretariat to take into account comments received during the February 2016 GRRF session, for a revised new UN Regulation based on the provisions for tyre-pressure monitoring systems (TPMS) extracted from UN R64 in order to facilitate the application of UN R64 within the International Whole Vehicle Type Approval system. This proposal also seeks to take into account efforts to update US FMVSS requirements for TPMS.

59. The expert from EC proposed amendments (GRRF-81-17) to ECE/TRANS/WP.29/GRRF/2016/5 clarifying that the manufacturer has the obligation to design a TPMS system which shall detect underinflation under a wide range of driving conditions and not only in the conditions of the test procedures in Annex 3 of the Regulation. GRRF adopted with the proposal as amended (GRRF-81-17-Rev.1). GRRF noted that the agreed proposal would not modify the test procedures as described in Annex 3 of the Regulation. The expert from the Russian Federation and some type-approval authorities raised a question about general provisions in UN Regulations for which no procedure was defined to verify the compliance with these general provisions for manufacturers. GRRF suggested that WP.29 could have a general discussion on the compliance off the test procedures and could provide guidance to the WP.29 subsidiary bodies.

61. GRRF adopted ECE/TRANS/WP.29/GRRF/2016/5 as amended by Annex XI of the report and requested the secretariat to submit it to WP.29 and AC.1 for consideration at their June 2016 sessions.

Working draft from the ACSF informal group to enable the approval of automated steering systems intended to operate at speeds greater than 10 km/h presented for information and discussion at the 81st GRRF session.

50. The expert from Germany, on behalf of the Co-Chairs of the IWG on ACSF, introduced GRRF-81-32 presenting the status of the work done (GRRF-81-18) by the IWG on ACSF. He explained that the IWG was working on the provisions for the proposed five categories of ACSF as well as requirements and testing procedures for the proper assessment of the safety performance of these functions. He clarified that the speed limit for Category E systems would be 130 km/h but that other Categories could work at higher speeds. GRRF endorsed the status report and agreed to resume consideration of this agenda item at its next session.

52. The GRRF Ambassador presented GRRF-81-19 reporting on the activities of the IWG on IWVTA and its subgroups. GRRF noted the progress done by the IWG. GRRF also noted that the pre-testing task force would test procedures related to the draft Regulation No. 0 and that GRRF actions related to IWVTA should ideally be completed by February 2016. The experts noted the work undertaken on the revision of the EU framework Directive and asked to the expert from EC whether it would have an impact on the adoption of the draft Revision 3 to the 1958 Agreement and on IWVTA. He answered that the process for adoption may be impacted.

UN R13 allows for the exemption of certain vehicles from the requirement for electronic stability controls. This proposal seeks to clarify the scope of the exemptions to include any special purpose vehicle with a non-standard chassis. The change was prompted by a modified vehicle where use of ESC was not feasible, but where the current UN R13 language left doubt as to whether the ESC requirement was applicable.

15. The expert from CLEPA introduced GRRF-81-20, proposing an amendment to Footnote 12 in Regulation No. 13. The proposal received some comments and was amended as reflected in GRRF-81-20-Rev.1. GRRF agreed with the proposal and requested the secretariat to distribute the revised document with an official symbol at the next session of GRRF.

UN R13 allows for the exemption of certain vehicles from the requirement for electronic stability controls. This proposal seeks to clarify the scope of the exemptions to include any special purpose vehicle with a non-standard chassis. The change was prompted by a modified vehicle where use of ESC was not feasible, but where the current UN R13 language left doubt as to whether the ESC requirement was applicable. This revised proposal takes into account comments received during the February 2016 GRRF session.

Revised version of document GRRF/2016/4, proposing to extract tyre pressure monitoring systems from UN R64, pursuant to the discussions held during the February 2016 GRRF session.

58. The expert from OICA introduced ECE/TRANS/WP.29/GRRF/2016/4 proposing to remove the TPMS requirements from Regulation No. 64 as suggested by the IWG on IWVTA. He presented ECE/TRANS/WP.29/GRRF/2016/5 proposing a new Regulation on TPMS. Following discussion, GRRF agreed on the proposals as amended and reproduced in GRRF-81-21 and GRRF-81-22.

60. GRRF adopted ECE/TRANS/WP.29/GRRF/2016/4 as amended by Annex X of the report and requested the secretariat to submit it to WP.29 and AC.1 for consideration at their June 2016 sessions, as draft 03 series of amendments to Regulation No. 64.

Revised version of document GRRF/2016/5, proposing a new UN Regulation based upon provisions for tyre pressure monitoring systems extracted from the current UN R64, pursuant to the discussions held during the February 2016 GRRF session.

58. The expert from OICA introduced ECE/TRANS/WP.29/GRRF/2016/4 proposing to remove the TPMS requirements from Regulation No. 64 as suggested by the IWG on IWVTA. He presented ECE/TRANS/WP.29/GRRF/2016/5 proposing a new Regulation on TPMS. Following discussion, GRRF agreed on the proposals as amended and reproduced in GRRF-81-21 and GRRF-81-22.

61. GRRF adopted ECE/TRANS/WP.29/GRRF/2016/5 as amended by Annex XI of the report and requested the secretariat to submit it to WP.29 and AC.1 for consideration at their June 2016 sessions.

Revised version of document GRRF/2016/6 pursuant to discussions held during the February 2016 GRRF session proposing to delete provisions for electronic stability and brake-assist systems from UN R13-H as part of their transposition into new stand-alone regulations.

54. The expert from OICA presented ECE/TRANS/WP.29/GRRF/2016/6 removing (as suggested by the IWG on IWVTA) the provisions on ESC and Brake Assist Systems (BAS) from Regulation No. 13-H, taking into consideration the comments received at previous sessions of GRRF as well as the transitional provisions proposed by the expert from UK in ECE/TRANS/WP.29/GRRF/2016/10. He introduced ECE/TRANS/WP.29/GRRF/2016/7 proposing a new Regulation on BAS. He also introduced a proposal for a new Regulation on ESC (ECE/TRANS/WP.29/GRRF/2016/8). After discussion, GRRF agreed on the revised proposals in GRRF-81-23, GRRF-81-24 and GRRF-81-25.

55. GRRF adopted ECE/TRANS/WP.29/GRRF/2016/6 as amended by Annex VII to the report and requested the Secretariat to submit it as well as the adopted proposal in ECE/TRANS/WP.29/GRRF/2013/13 to WP.29 and AC.1 for consideration and vote in June 2016 as draft 01 series of amendments to Regulation No. 13-H

Revised version of document GRRF/2016/7 pursuant to discussions held during the February 2016 GRRF session, proposing a new UN Regulation based upon brake-assist system provisions extracted from UN R13-H.

54. The expert from OICA presented ECE/TRANS/WP.29/GRRF/2016/6 removing (as suggested by the IWG on IWVTA) the provisions on ESC and Brake Assist Systems (BAS) from Regulation No. 13-H, taking into consideration the comments received at previous sessions of GRRF as well as the transitional provisions proposed by the expert from UK in ECE/TRANS/WP.29/GRRF/2016/10. He introduced ECE/TRANS/WP.29/GRRF/2016/7 proposing a new Regulation on BAS. He also introduced a proposal for a new Regulation on ESC (ECE/TRANS/WP.29/GRRF/2016/8). After discussion, GRRF agreed on the revised proposals in GRRF-81-23, GRRF-81-24 and GRRF-81-25.

56. GRRF adopted ECE/TRANS/WP.29/GRRF/2016/7 as amended by Annex VIII to the report and requested the Secretariat to submit it to WP.29 and AC.1 for consideration and vote in June 2016.

Revised version of document GRRF/2016/8 pursuant to discussions held during the February 2016 GRRF session, proposing a new UN Regulation comprised of provisions concerning electronic stability control systems extracted from UN R13-H.

54. The expert from OICA presented ECE/TRANS/WP.29/GRRF/2016/6 removing (as suggested by the IWG on IWVTA) the provisions on ESC and Brake Assist Systems (BAS) from Regulation No. 13-H, taking into consideration the comments received at previous sessions of GRRF as well as the transitional provisions proposed by the expert from UK in ECE/TRANS/WP.29/GRRF/2016/10. He introduced ECE/TRANS/WP.29/GRRF/2016/7 proposing a new Regulation on BAS. He also introduced a proposal for a new Regulation on ESC (ECE/TRANS/WP.29/GRRF/2016/8). After discussion, GRRF agreed on the revised proposals in GRRF-81-23, GRRF-81-24 and GRRF-81-25.

57. GRRF adopted ECE/TRANS/WP.29/GRRF/2016/8 as amended by Annex IX to the report and requested the Secretariat to submit it to WP.29 and AC.1 for consideration and vote in June 2016.

Revised version of document GRRF/2016/9 pursuant to discussions held during the February 2016 GRRF session, proposing a new UN Regulation on tire installation for use within the International Whole Vehicle Type Approval system.

53. The expert from OICA introduced ECE/TRANS/WP.29/GRRF/2016/9 proposing a new Regulation on Tyre Installation. The proposal received some comments to harmonize the provisions with those of the corresponding EU Regulation No. 458/2011 (GRRF-81-26). GRRF adopted the proposal as amended by Annex VI to the report and requested the secretariat to submit the amended proposal to WP.29 and AC.1 for consideration and vote in June 2016.

UN R90 specifies one minimum shear strength requirement for brake shoe assemblies and one requirement for brake pad assemblies in Regulation No. 90 via a reference to ISO 6312. However, ISO 6312 specifies test methods for hot and cold shear tests. Therefore, GRRF is requested to clarify whether the strength requirements are for both hot and cold shear.

28. The secretariat introduced GRRF-81-27 containing the request for clarifications of paragraph 5.2.2.1.1 in Regulation No. 90. Only one minimum shear strength requirement is specified for brake shoe assemblies and one requirement for brake pad assemblies in Regulation No. 90 and it is therefore requested that clarification be provided if these requirements are for both cold and hot shear because ISO 6312 specifies methods for both cold and hot shear tests. GRRF confirmed that Regulation No. 90 requested that the test, according to the mentioned ISO standard, has to be run at ambient temperature only. Several experts noted that a general review of Regulation No. 90 would be useful in order to minimize interpretation issues. Following discussions, the expert from Spain prepared and presented ToR for a SIG of experts to explore whether the issues related to the interpretation of the Regulation were minor and could be managed by GRRF or whether they are significant and would require the establishment of a specific IWG. GRRF agreed with the proposal and endorsed GRRF-81-33.

67. The secretariat introduced GRRF-81-27 under agenda item 6 (see para. 28 above).

Revised proposal to align UN R78 with the provisions for anti-lock braking systems used in other regulations, including specific exemptions for certain off-road vehicles as incorporated in UN Regulation No. 13. The proposal clarifies the limits on the use of any temporary ABS deactivation switch and prohibition against permanent disabling of ABS if fitted on a motorcycle. The European Commission prepared this revised proposal in cooperation with Germany, the Netherlands and IMMA. Given the importance of the changes, the proposal includes transitional provisions.

21. GRRF agreed with the proposal of the expert from EC to reintroduce ECE/TRANS/WP.29/GRRF/2015/41 under agenda item 5(a) and to reconsider the proposal clarifying the possibility to install means to disable the ABS function in certain conditions for L-category vehicles. The expert recalled that a majority of experts expressed specific concerns related to the condition (f) in the proposal at the previous session and therefore agreed to delete it, as shown in GRRF-81-28. The proposal, received some comments to amend the text in a more stringent manner. The expert from IMMA advocated for transitional provisions aligned with those of Euro 5 in Europe. He added that the newly proposed wording was too restrictive and may exclude some vehicles that were already equipped with the feature. GRRF agreed therefore on longer transitional provisions for existing vehicle types, and also to not excessively restrict the kind of vehicle that could be equipped with the ABS off switch function, by softening the wording of these provisions. The Contracting Parties agreed on the amended proposal GRRF-81-28-Rev.1. The expert from Italy expressed a scrutiny reservation on the provisions related to the off road switch. GRRF adopted the proposal as reproduced in Annex III and requested the Secretariat to submit it to WP.29 and AC.1 for consideration at their November 2016 sessions, as a new 04 series of amendments to Regulation No. 78, subject to final review by GRRF in September 2016.

Revised proposal to align UN R78 with the provisions for anti-lock braking systems used in other regulations, including specific exemptions for certain off-road vehicles as incorporated in UN Regulation No. 13. The proposal clarifies the limits on the use of any temporary ABS deactivation switch and prohibition against permanent disabling of ABS if fitted on a motorcycle. This revised proposal takes into account comments received during the February 2016 GRRF session.

21. GRRF agreed with the proposal of the expert from EC to reintroduce ECE/TRANS/WP.29/GRRF/2015/41 under agenda item 5(a) and to reconsider the proposal clarifying the possibility to install means to disable the ABS function in certain conditions for L-category vehicles. The expert recalled that a majority of experts expressed specific concerns related to the condition (f) in the proposal at the previous session and therefore agreed to delete it, as shown in GRRF-81-28. The proposal, received some comments to amend the text in a more stringent manner. The expert from IMMA advocated for transitional provisions aligned with those of Euro 5 in Europe. He added that the newly proposed wording was too restrictive and may exclude some vehicles that were already equipped with the feature. GRRF agreed therefore on longer transitional provisions for existing vehicle types, and also to not excessively restrict the kind of vehicle that could be equipped with the ABS off switch function, by softening the wording of these provisions. The Contracting Parties agreed on the amended proposal GRRF-81-28-Rev.1. The expert from Italy expressed a scrutiny reservation on the provisions related to the off road switch. GRRF adopted the proposal as reproduced in Annex III and requested the Secretariat to submit it to WP.29 and AC.1 for consideration at their November 2016 sessions, as a new 04 series of amendments to Regulation No. 78, subject to final review by GRRF in September 2016.

Presentation explaining the proposal to establish requirements for the approval of replacement brake lining assemblies for L-category vehicles.

29. The expert from Italy presented GRRF-81-29 introducing ECE/TRANS/WP.29/GRRF/2016/18. The experts from Spain, UK and EC expressed reservations with the aim of the proposal, taking into account the history of the Regulation No. 90 development. They suggested that a more strategic and coordinated approach was chosen to develop the Regulation. GRRF agreed that this proposal may be reviewed by a SIG dealing with Regulation No. 90.

Information and status report on the European Commission Cooperative ITS Deployment Platform established in 2014 to define the European framework for connected vehicles and on the Commission Decision C(2015) 6943 of 19 October 2015 establishing a High Level Group on the Competitiveness and Sustainable Growth of the Automotive Industry in the European Union (GEAR 2030) with particular attention to the evolution of connected and autonomous vehicles.

47. The expert from EC informed (GRRF-81-30) GRRF about the Collaborative ITS (C-ITS) platform report. The secretariat noted that the so-called “Day 1 list” in the report contained mainly systems directly related to road vehicles or indirectly, by interacting with road vehicles through their connectivity. He wondered whether EC would wish to contribute at the World Forum level on these systems. The expert from EC explained that no strategy was decided at this stage but he expected that the type-approval requirements for theses vehicle-related systems could be handled by the World Forum, if non-EU Contracting Parties would express their interest in these activities and would wish to contribute.

64. The expert from EC reported (GRRF-81-30) on Gear 2030, being a high level group consisting of the executives of the European automotive sector, relevant Ministers and Commissioners of the European Commission. He added that one of the goals of the group was to develop a roadmap for highly automated driving, within two years.

The previous GRRF session considered a proposal to add a trigger threshold requirement and to modify the sampling rate, deceleration limit and data selection criteria for category B brake-assist systems. CLEPA has provided this presentation to clarify the background behind the BAS provisions and facilitate further discussion.

14. The expert from CLEPA recalled the presentation (GRRF-80-06) made by the expert from China at the previous session of GRRF. He presented GRRF-81-31 answering to the proposal contained in GRRF-80-06. The experts from the Czech Republic and OICA confirmed the information provided by CLEPA. GRRF agreed that the consideration of GRRF-80-06 and GRRF-81-31 was completed.

50. The expert from Germany, on behalf of the Co-Chairs of the IWG on ACSF, introduced GRRF-81-32 presenting the status of the work done (GRRF-81-18) by the IWG on ACSF. He explained that the IWG was working on the provisions for the proposed five categories of ACSF as well as requirements and testing procedures for the proper assessment of the safety performance of these functions. He clarified that the speed limit for Category E systems would be 130 km/h but that other Categories could work at higher speeds. GRRF endorsed the status report and agreed to resume consideration of this agenda item at its next session.

Technical services have reported difficulties in interpreting the requirements and procedures incorporated in the 02 series of amendments to UN R90. Therefore, this submission proposes a special interest group to consider whether an informal working group may be needed to revised UN 92.02.

28. The secretariat introduced GRRF-81-27 containing the request for clarifications of paragraph 5.2.2.1.1 in Regulation No. 90. Only one minimum shear strength requirement is specified for brake shoe assemblies and one requirement for brake pad assemblies in Regulation No. 90 and it is therefore requested that clarification be provided if these requirements are for both cold and hot shear because ISO 6312 specifies methods for both cold and hot shear tests. GRRF confirmed that Regulation No. 90 requested that the test, according to the mentioned ISO standard, has to be run at ambient temperature only. Several experts noted that a general review of Regulation No. 90 would be useful in order to minimize interpretation issues. Following discussions, the expert from Spain prepared and presented ToR for a SIG of experts to explore whether the issues related to the interpretation of the Regulation were minor and could be managed by GRRF or whether they are significant and would require the establishment of a specific IWG. GRRF agreed with the proposal and endorsed GRRF-81-33.

Revised proposal to ensure that coupling balls do not block rear lighting and/or registration plates. In line with the EU General Safety Rule, Annex IV specification for application of UN R55, couplings that might block lighting or plates must be removable, repositionable, and unlockable in order to make it easier for users to remove them or reposition them when not in use (e.g., towing a trailer.) Coupling balls that are so designed as to be unable to block lighting or plates may still incorporate locks and/or require tools to remove or reposition.

20. The expert from EC recalled the purpose of GRRF-80-29 aimed at addressing the situation in which coupling balls would be installed right in front of registration plates or rear fog lamps. The proposal received some comments, related to the restriction on the use of a release key in paragraph 1.1.4., and he drafted a revised proposal as reproduced in GRRF-81-34. GRRF adopted the proposal as reproduced in Annex II of this report and requested the secretariat to submit it to WP.29 and AC.1 for consideration at their June 2016 sessions, as Supplement 6 to the 01 series of amendments to Regulation No. 55.

2. GRRF considered the agenda prepared for the eighty-first session and adopted it (ECE/TRANS/WP.29/GRRF/2016/1 and Add.1) as updated and reproduced in GRRF‑81‑16, including all informal documents received until the session’s starting date.

2. GRRF considered the agenda prepared for the eighty-first session and adopted it (ECE/TRANS/WP.29/GRRF/2016/1 and Add.1) as updated and reproduced in GRRF‑81‑16, including all informal documents received until the session’s starting date.

Proposal is to align GTR 16 with technical progress, incorporating new provisions for wet grip performance, rolling resistance and qualification for use at severe snow conditions both for passenger car (PC) and light truck / commercial (LT/C) tyres (as were recently adopted within UN Regulation No. 117). The proposal also includes updates from relevant FMVSS and UN Regulations Nos. 30 and 54.

30. The Chair of GRRF recalled the authorization to develop an amendment to GTR No. 16 (see ECE/TRANS/WP29/AC.3/42) and the sponsorship of the Russian Federation for this activity. The expert from the Russian Federation reported on the work done by the group of interested experts dealing with this amendment, introducing the draft amendment 1 to GTR No.16 in ECE/TRANS/WP.29/2016/2 as well as the report contained in ECE/TRANS/WP.29/2016/3. He explained that GRRF-81-02 contained additional information to show the amendments to the existing text of the GTR as well as the origin of the amended text. GRRF adopted both official documents above (and removed the square brackets in paras. 14 and 20 of ECE/TRANS/WP.29/GRRF/2016/3). GRRF requested the secretariat to submit them to WP.29 and AC.3 for consideration and vote at their June 2016 sessions.

Explanatory report on the development and contents of the amendment concerning wet grip, rolling resistance, and other updated provisions for GTR 16 on tyres.

30. The Chair of GRRF recalled the authorization to develop an amendment to GTR No. 16 (see ECE/TRANS/WP29/AC.3/42) and the sponsorship of the Russian Federation for this activity. The expert from the Russian Federation reported on the work done by the group of interested experts dealing with this amendment, introducing the draft amendment 1 to GTR No.16 in ECE/TRANS/WP.29/2016/2 as well as the report contained in ECE/TRANS/WP.29/2016/3. He explained that GRRF-81-02 contained additional information to show the amendments to the existing text of the GTR as well as the origin of the amended text. GRRF adopted both official documents above (and removed the square brackets in paras. 14 and 20 of ECE/TRANS/WP.29/GRRF/2016/3). GRRF requested the secretariat to submit them to WP.29 and AC.3 for consideration and vote at their June 2016 sessions.

Proposal for a revised UN R64 that removes the provisions for tyre-pressure monitoring systems (TPMS) (to be reproduced in a new separate regulation) in order to facilitate the application of UN R64 within the International Whole Vehicle Type Approval system.

58. The expert from OICA introduced ECE/TRANS/WP.29/GRRF/2016/4 proposing to remove the TPMS requirements from Regulation No. 64 as suggested by the IWG on IWVTA. He presented ECE/TRANS/WP.29/GRRF/2016/5 proposing a new Regulation on TPMS. Following discussion, GRRF agreed on the proposals as amended and reproduced in GRRF-81-21 and GRRF-81-22.

60. GRRF adopted ECE/TRANS/WP.29/GRRF/2016/4 as amended by Annex X of the report and requested the secretariat to submit it to WP.29 and AC.1 for consideration at their June 2016 sessions, as draft 03 series of amendments to Regulation No. 64.

58. The expert from OICA introduced ECE/TRANS/WP.29/GRRF/2016/4 proposing to remove the TPMS requirements from Regulation No. 64 as suggested by the IWG on IWVTA. He presented ECE/TRANS/WP.29/GRRF/2016/5 proposing a new Regulation on TPMS. Following discussion, GRRF agreed on the proposals as amended and reproduced in GRRF-81-21 and GRRF-81-22.

59. The expert from EC proposed amendments (GRRF-81-17) to ECE/TRANS/WP.29/GRRF/2016/5 clarifying that the manufacturer has the obligation to design a TPMS system which shall detect underinflation under a wide range of driving conditions and not only in the conditions of the test procedures in Annex 3 of the Regulation. GRRF adopted with the proposal as amended (GRRF-81-17-Rev.1). GRRF noted that the agreed proposal would not modify the test procedures as described in Annex 3 of the Regulation. The expert from the Russian Federation and some type-approval authorities raised a question about general provisions in UN Regulations for which no procedure was defined to verify the compliance with these general provisions for manufacturers. GRRF suggested that WP.29 could have a general discussion on the compliance off the test procedures and could provide guidance to the WP.29 subsidiary bodies.

61. GRRF adopted ECE/TRANS/WP.29/GRRF/2016/5 as amended by Annex XI of the report and requested the secretariat to submit it to WP.29 and AC.1 for consideration at their June 2016 sessions.

New revised proposal to delete provisions for electronic stability and brake-assist systems from UN R13-H as part of their transposition into new stand-alone regulations.

54. The expert from OICA presented ECE/TRANS/WP.29/GRRF/2016/6 removing (as suggested by the IWG on IWVTA) the provisions on ESC and Brake Assist Systems (BAS) from Regulation No. 13-H, taking into consideration the comments received at previous sessions of GRRF as well as the transitional provisions proposed by the expert from UK in ECE/TRANS/WP.29/GRRF/2016/10. He introduced ECE/TRANS/WP.29/GRRF/2016/7 proposing a new Regulation on BAS. He also introduced a proposal for a new Regulation on ESC (ECE/TRANS/WP.29/GRRF/2016/8). After discussion, GRRF agreed on the revised proposals in GRRF-81-23, GRRF-81-24 and GRRF-81-25.

55. GRRF adopted ECE/TRANS/WP.29/GRRF/2016/6 as amended by Annex VII to the report and requested the Secretariat to submit it as well as the adopted proposal in ECE/TRANS/WP.29/GRRF/2013/13 to WP.29 and AC.1 for consideration and vote in June 2016 as draft 01 series of amendments to Regulation No. 13-H

Proposed new stand-alone UN Regulation comprised of the brake assist systems provisions of UN Regulation 13-H.

54. The expert from OICA presented ECE/TRANS/WP.29/GRRF/2016/6 removing (as suggested by the IWG on IWVTA) the provisions on ESC and Brake Assist Systems (BAS) from Regulation No. 13-H, taking into consideration the comments received at previous sessions of GRRF as well as the transitional provisions proposed by the expert from UK in ECE/TRANS/WP.29/GRRF/2016/10. He introduced ECE/TRANS/WP.29/GRRF/2016/7 proposing a new Regulation on BAS. He also introduced a proposal for a new Regulation on ESC (ECE/TRANS/WP.29/GRRF/2016/8). After discussion, GRRF agreed on the revised proposals in GRRF-81-23, GRRF-81-24 and GRRF-81-25.

56. GRRF adopted ECE/TRANS/WP.29/GRRF/2016/7 as amended by Annex VIII to the report and requested the Secretariat to submit it to WP.29 and AC.1 for consideration and vote in June 2016.

Proposal for a new stand-alone UN Regulation on electronic stability control systems comprising the ESC provisions removed from UN R13-H.

54. The expert from OICA presented ECE/TRANS/WP.29/GRRF/2016/6 removing (as suggested by the IWG on IWVTA) the provisions on ESC and Brake Assist Systems (BAS) from Regulation No. 13-H, taking into consideration the comments received at previous sessions of GRRF as well as the transitional provisions proposed by the expert from UK in ECE/TRANS/WP.29/GRRF/2016/10. He introduced ECE/TRANS/WP.29/GRRF/2016/7 proposing a new Regulation on BAS. He also introduced a proposal for a new Regulation on ESC (ECE/TRANS/WP.29/GRRF/2016/8). After discussion, GRRF agreed on the revised proposals in GRRF-81-23, GRRF-81-24 and GRRF-81-25.

57. GRRF adopted ECE/TRANS/WP.29/GRRF/2016/8 as amended by Annex IX to the report and requested the Secretariat to submit it to WP.29 and AC.1 for consideration and vote in June 2016.

Proposed text for a new regulation on tire installation for use within the International Whole Vehicle Type Approval system.

53. The expert from OICA introduced ECE/TRANS/WP.29/GRRF/2016/9 proposing a new Regulation on Tyre Installation. The proposal received some comments to harmonize the provisions with those of the corresponding EU Regulation No. 458/2011 (GRRF-81-26). GRRF adopted the proposal as amended by Annex VI to the report and requested the secretariat to submit the amended proposal to WP.29 and AC.1 for consideration and vote in June 2016.

Proposal for revised transitional provisions under the regulation.

54. The expert from OICA presented ECE/TRANS/WP.29/GRRF/2016/6 removing (as suggested by the IWG on IWVTA) the provisions on ESC and Brake Assist Systems (BAS) from Regulation No. 13-H, taking into consideration the comments received at previous sessions of GRRF as well as the transitional provisions proposed by the expert from UK in ECE/TRANS/WP.29/GRRF/2016/10. He introduced ECE/TRANS/WP.29/GRRF/2016/7 proposing a new Regulation on BAS. He also introduced a proposal for a new Regulation on ESC (ECE/TRANS/WP.29/GRRF/2016/8). After discussion, GRRF agreed on the revised proposals in GRRF-81-23, GRRF-81-24 and GRRF-81-25.

Proposal to:
a) Align definitions and content with the other tyre regulations (UN Regulations Nos. 117, 54, 75 etc.);
b) Include a definition of “manufacturer” extracted from the resolution “R.E.3”;
c) Adopt a common definition and use of the terms “Manufacturer’s name”, “Brand name”, “Trademark”, “Trade description” and “Commercial name” and their links; and
d) Add information in the certificate to enable approval authorities to more easily understand the products the certificate addresses.

31. The expert from France introduced ECE/TRANS/WP.29/GRRF/2016/11 together with ECE/TRANS/WP.29/GRRF/2016/13 and ECE/TRANS/WP.29/GRRF/2016/14 respectively under agenda items 7(c) and 7(g) below, proposing revised clarifications of the definitions. GRRF adopted the proposal and requested the secretariat to submit them to WP.29 and AC.1 for consideration and vote at their June 2016 sessions, as draft Supplement 18 to the 02 series of amendments to Regulation No. 30, as part of the draft Supplement 21 to Regulation No. 54 and as draft Supplement 9 to the 02 series of amendments to Regulation No. 117.

Proposal to modify the marking requirements to replace PSI with kilopascals (“kPa”). The intent is to harmonize the pressure indication and avoid confusion between UN Regulation No. 54 and US FMVSS 119 or FMVSS 139. The proposal would also change the measurement units for drum speed from min^-1 to km.h^-1 in alignment with the requirements with other tyre regulations and align the wording in Annex 7, Appendix 1 with the text of the Regulation.

33. The expert from ETRTO introduced ECE/TRANS/WP.29/GRRF/2016/12, a revised proposal to amend the tyre marking requirements and also containing the amendments previously proposed by the expert from Slovakia. GRRF adopted the proposal and requested the secretariat to submit it to WP.29 and AC.1 for consideration at their June 2016 sessions, as part of the draft Supplement 21 to Regulation No. 54 and as part of the draft Regulation No. 117.

9. GRB was informed that the Working Party on Brakes and Running Gear (GRRF), at its February 2016 session, had adopted amendment proposals to Regulation No. 117 with the aim to align some definitions and paragraphs with Regulations Nos. 30, 54 and 75. The adopted proposals also included a definition of “manufacturer” from the Consolidated Resolution on the Construction of Vehicles (R.E.3) and amended the tyre marking requirements.

Proposal to:
a) Align definitions and content with the other tyre regulations (UN Regulations Nos. 30, 117, 75 etc.);
b) Include a definition of “manufacturer” extracted from the resolution “R.E.3”;
c) Adopt a common definition and use of the terms “Manufacturer’s name”, “Brand name”, “Trademark”, “Trade description” and “Commercial name” and their links; and
d) Add information in the certificate to enable approval authorities to more easily understand the products the certificate addresses.

31. The expert from France introduced ECE/TRANS/WP.29/GRRF/2016/11 together with ECE/TRANS/WP.29/GRRF/2016/13 and ECE/TRANS/WP.29/GRRF/2016/14 respectively under agenda items 7(c) and 7(g) below, proposing revised clarifications of the definitions. GRRF adopted the proposal and requested the secretariat to submit them to WP.29 and AC.1 for consideration and vote at their June 2016 sessions, as draft Supplement 18 to the 02 series of amendments to Regulation No. 30, as part of the draft Supplement 21 to Regulation No. 54 and as draft Supplement 9 to the 02 series of amendments to Regulation No. 117.

32. The expert from France introduced ECE/TRANS/WP.29/GRRF/2016/13 together with the corresponding document relevant for Regulation No. 30 (see para. 31 above).

Proposal to:
a) Align definitions and content with the other tyre regulations (UN Regulations Nos. 30, 54, 75 etc.);
b) Include a definition of “manufacturer” extracted from the resolution “R.E.3”;
c) Adopt a common definition and use of the terms “Manufacturer’s name”, “Brand name”, “Trademark”, “Trade description” and “Commercial name” and their links; and
d) Add information in the certificate to enable approval authorities to more easily understand the products the certificate addresses.

31. The expert from France introduced ECE/TRANS/WP.29/GRRF/2016/11 together with ECE/TRANS/WP.29/GRRF/2016/13 and ECE/TRANS/WP.29/GRRF/2016/14 respectively under agenda items 7(c) and 7(g) below, proposing revised clarifications of the definitions. GRRF adopted the proposal and requested the secretariat to submit them to WP.29 and AC.1 for consideration and vote at their June 2016 sessions, as draft Supplement 18 to the 02 series of amendments to Regulation No. 30, as part of the draft Supplement 21 to Regulation No. 54 and as draft Supplement 9 to the 02 series of amendments to Regulation No. 117.

40. The expert from France introduced ECE/TRANS/WP.29/GRRF/2016/14 together with the corresponding document relevant for Regulation No. 30 (see para. 31 of the session report). The expert from ETRTO introduced ECE/TRANS/WP.29/GRRF/2016/12 addressing both Regulations Nos. 54 and 117 during the review of amendments proposal for Regulation No. 54 (see para. 33).

9. GRB was informed that the Working Party on Brakes and Running Gear (GRRF), at its February 2016 session, had adopted amendment proposals to Regulation No. 117 with the aim to align some definitions and paragraphs with Regulations Nos. 30, 54 and 75. The adopted proposals also included a definition of “manufacturer” from the Consolidated Resolution on the Construction of Vehicles (R.E.3) and amended the tyre marking requirements.

Proposal to add load indexes to the table in the Annex 4 to keep up with the technical evolution of tyres.

38. The expert from ETRTO presented ECE/TRANS/WP.29/GRRF/2016/15 proposing the inclusion in the Regulation of load indexes from 201 to 279 to follow the technical evolution of tyres. GRRF adopted this proposal and requested the secretariat to submit both adopted proposals above to WP.29 and AC.1 for consideration at their June 2016 sessions, as Supplement 14 to Regulation No. 106.

Proposal to add new tyre sizes to Annex 5 of UN R54.

34. The expert from ETRTO presented ECE/TRANS/WP.29/GRRF/2016/16, proposing amendments to Annex 5 to include new sizes. GRRF adopted the proposal with the correction below and requested the secretariat to submit the proposal as corrected to WP.29 and AC.1 for consideration at their June 2016 sessions, as part of the draft Supplement 21 to Regulation No. 54.

The empty cell, corresponding to the tyre size designation “30×9.50-16.5LT” shall read “240”

The current text of UN R54 does not encompass the case where a tyre designed for a “special” application can also fulfil the definition of a “snow” tyre. This proposal would allow for such tyres to be marked with the inscription M+S, M.S, or M&S while remaining in the category of use “special”.

35. The expert from France introduced ECE/TRANS/WP.29/GRRF/2016/17 (based on GRRF-80-17) proposing provisions for tyres designed for a “special” application that also fulfil the definition of a “snow” tyre. GRRF requested the secretariat to submit the corrected proposal to WP.29 and AC.1 for consideration at their June 2016 sessions, as part of the draft Supplement 21 to Regulation No. 54.

Proposal to introduce requirements for the approval of replacement brake lining assemblies for L-category vehicles.

29. The expert from Italy presented GRRF-81-29 introducing ECE/TRANS/WP.29/GRRF/2016/18. The experts from Spain, UK and EC expressed reservations with the aim of the proposal, taking into account the history of the Regulation No. 90 development. They suggested that a more strategic and coordinated approach was chosen to develop the Regulation. GRRF agreed that this proposal may be reviewed by a SIG dealing with Regulation No. 90.

25. The expert from Italy presented GRRF-82-32 introducing ECE/TRANS/WP.29/GRRF/2016/18, which was already presented once, at the February 2016 session. He pointed out that he didn’t receive any feedback or comments on the proposal and that therefore the original proposal was not amended. GRRF adopted the proposal as amended and requested the secretariat to submit this proposal as draft Supplement 4 to the 02 series of amendments to Regulation No. 90 (Replacement braking parts), for consideration and vote at the June 2017 sessions of WP.29 and AC.1.

Proposal for corrections to the text and equations.

11. The expert from Hungary presented ECE/TRANS/WP.29/GRRF/2016/19, tabled by the experts from Hungary and the Netherlands, based on GRRF-80-11. GRRF adopted the document with the following correction:
For “Paragraph 2.2.18., amend …”, read “Annex 12, paragraph 2.2.18., amend …”

12. GRRF requested the secretariat to submit the adopted proposal above to WP.29 and AC.1 for consideration at their June 2016 sessions, as Supplement 14 to the 11 series of amendments to Regulation No. 13.

Amendment to remove certain design restrictions that impede the application of new technologies, especially related to trailer power steering systems and the use of energy from the towing vehicle, including specification of the connector through which electrical energy is supplied in the proposal

48. The expert from CLEPA recalled, on behalf of CLCCR, the proposal ECE/TRANS/WP.29/GRRF/2016/20 previously adopted by GRRF with a scrutiny reservation. CLCCR reviewed the text in square brackets and proposed to delete it as proposed in GRRF-81-13. GRRF adopted the proposal as amended by Annex V to the report and requested the secretariat to submit it together with ECE/TRANS/WP.29/GRRF/2013/13 to WP.29 and AC.1 for consideration at their June 2016 sessions, as Supplement 5 to the 01 series of amendments to Regulation No. 79.

Proposal to extend the possibility of actuating the service braking system to vehicles of categories M2 and N2 below 5t.

63. The expert from OICA presented ECE/TRANS/WP.29/GRRF/2016/21 proposing to extend the possibility of actuating the service braking system to vehicles of categories M₂ and N₂ below five tons. The proposal received some comments on possible safety risks. The expert from Switzerland explained that his country, due to specific geographic characteristics, had long roads with significant slopes and that the requirements shall take this specificity into consideration. The expert from OICA stated that, due to speed limiter (90 km/h), fully loaded vehicles of category M₂ of N₂ below five tons would have a smaller kinetic energy than fully loaded vehicles of category N₁ driving at 130 km/h, therefore, the proposal is not introducing any road safety issue. The expert from Denmark noted that a tell-tale could be provided, in combination with the system actuating the service brakes, to make the driver aware of the service brake application. GRRF agreed to continue consideration of this agenda item at September 2016 session of GRRF and invited GRRF to provide evidences that no additional safety risk would be expected if the requested extension would be granted.

63. The expert from OICA withdrew ECE/TRANS/WP.29/GRRF/2016/21.

Proposal to remove tables specifying general values for replacement discs and drums that are identical to the original (2.3.3.4) since such replacements must by definition have values identical to the corresponding original parts. The proposal also would change the maximum permitted thickness variation of discs for medium and heavy vehicles from 0.030 mm to 0.050 mm (the common OEM specification).

25. The expert from CLEPA presented ECE/TRANS/WP.29/2016/22 based on GRRF-80-12 proposing amendments to provisions defined for equivalent brake discs and drums and a relaxation of the requirement on the thickness variation for interchangeable replacement discs or drums. The expert presented a revised proposal GRRF-81-04 limiting the thickness variation requirement modification to vehicles of category O2, O3, N3 and M3. The expert from Italy expressed his concern with the proposed requirement relaxation. After discussion, GRRF agreed on the revised document GRRF-81-04-Rev.1. GRRF adopted the proposal amended by Annex IV to the report and requested the secretariat to submit it to WP.29 and AC.1 for consideration at their June 2016 sessions, as Supplement 3 to the 02 series of amendments to Regulation No. 90.

Proposal to allow Emergency Stop Signal (ESS) systems on motorcycles and related vehicles.

23. The expert from IMMA introduced ECE/TRANS/WP.29/GRRF/2016/23 proposing amendments to Regulation No. 78 in order to allow the installation of Emergency Stop Signal on motorcycles. GRRF noted that IMMA was coordinating the related activity at the Working Party on Lighting and Light-Signalling (GRE) to introduce the relevant provisions in Regulation No. 53. GRRF adopted the proposal with the minor correction below and requested the Secretariat to submit it to WP.29 and AC.1 for consideration at their June 2016 sessions, as part of the Supplement 3 to the 03 series of amendments to Regulation No. 78.

In paragraph 5.1.15.1., for “m/s2”, read “m/s²”