30. The representative from the European Commission introduced ECE/TRANS/WP.29/GRPE/2023/2, GRPE-87-26-Rev.1 and GRPE-87-43 related to the new 08 series of amendments to UN regulation No. 83. With this new series of amendments it will be equivalent to the European emission level Euro 6e. The representative from OICA introduced GRPE-87-10 and requested additional time to scrutinize GRPE-87-26-Rev.1. The representative from the UK highlighted the importance of this proposal for their regulatory framework and hoped for a final proposal to be adopted during this session of GRPE.

31. Following additional improvements made during the session, as reflected in GRPE-87-26-Rev.1, the representatives from OICA reiterated some concerns about the complexity of the proposal and the potential misunderstandings that could remain in the proposal. Under the assumption that on-going evolution of the document would be possible in the future, He supported the adoption of the proposal. The representatives from Italy and the UK thanked all involved parties for the improvements made to the text during the week and supported the proposal. GRPE adopted GRPE-87-26-Rev.1.

35. GRPE adopted ECE/TRANS/WP.29/GRPE/2023/2 as amended by GRPE-87-26-Rev.1, as reflected in Addendum 1, and requested the secretariat to submit it to WP.29 and AC.1 for consideration and vote at their June 2023 sessions as draft new 08 Series of Amendments to UN Regulation No. 83.

This proposal introduces the new Utility Factor (UF) approach proposed in the Euro 6e emissions type-approval legislation. In addition, as a result of the application of the new tyre labelling Regulation (EU) 2020/7401, this proposal introduces a revised format of the table with tyre energy efficiency classes according to rolling resistance coefficients (RRC), in-line with the format proposed in the Euro 6e emissions type-approval legislation.

25. The representative from the European Commission introduced GRPE-87-27 and GRPE-87-28. The representative from OICA added that the revised rolling resistance values were expected to have no influence on existing approvals, highlighting that contracting parties would likely require to add more rows to the relevant table. The representative from France highlighted that revised rolling resistance coefficients defined in UN Regulation No. 117 had recently been adopted by GRBP, with an entry into force expected in July 2024. She added a revision of UN Regulation No.154 was likely be needed in the future to reflect those changes when entered into force. The representative from the European Commission requested to hold some bilateral discussions with France to clarify the matter. GRPE agreed to have more time to scrutinize GRPE-87-27 and GRPE-87-28.

This proposal introduces the new Utility Factor (UF) approach proposed in the Euro 6e emissions type-approval legislation. In addition, as a result of the application of the new tyre labelling Regulation (EU) 2020/7401, this proposal introduces a revised format of the table with tyre energy efficiency classes according to rolling resistance coefficients (RRC), in-line with the format proposed in the Euro 6e emissions type-approval legislation.

25. The representative from the European Commission introduced GRPE-87-27 and GRPE-87-28. The representative from OICA added that the revised rolling resistance values were expected to have no influence on existing approvals, highlighting that contracting parties would likely require to add more rows to the relevant table. The representative from France highlighted that revised rolling resistance coefficients defined in UN Regulation No. 117 had recently been adopted by GRBP, with an entry into force expected in July 2024. She added a revision of UN Regulation No.154 was likely be needed in the future to reflect those changes when entered into force. The representative from the European Commission requested to hold some bilateral discussions with France to clarify the matter. GRPE agreed to have more time to scrutinize GRPE-87-27 and GRPE-87-28.

50. The representative from OICA introduced GRPE-87-50, summarizing the proposals on the inclusion of hydrogen as a fuel for internal combustion engines in heavy duty vehicles. He introduced ECE/TRANS/WP.29/GRPE/2023/6 as amended by GRPE-87-30. The representative from the European Commission introduced GRPE-87-31 to support the previous proposal.

51. The representatives from France, Germany, Italy, the Netherlands and Sweden supported the proposal and congratulated all parties involved in the development of this proposal. The representative from the EC highlighted that hydrogen internal combustion engines were important to achieve heavy duty vehicles CO2 emission reduction targets. He also added that the scope of engines covered would be enlarged, as well as the inclusion of dual fuel engines in forthcoming amendments to the related legislation.

52. The representative from India also supported the proposal and requested additional information on the fuel specifications for hydrogen, informing that some parameters differ in UN GTR No. 15 compared to UN regulation No. 49. The representative from OICA confirmed fuel specifications are aligned between UN Regulations Nos. 154 and 49 but could not confirm they are the same in UN GTR No. 15. He explained that the difference might come from the different specifications for hydrogen whether they are used in fuel cells or internal combustion engines. The hydrogen purity needs to be better for fuel cells, explaining potential tighter tolerances if only one grade of hydrogen fuel is specified. He concluded by saying that a similar issue might arise in heavy duty applications when fuel cell trucks are being deployed more broadly.

53. The representative from France introduced GRPE-87-53. The representative from the European Commission clarified some of the content of this proposal.

54. GRPE adopted ECE/TRANS/WP.29/GRPE/2023/6 as amended by GRPE-87-30 and complemented by GRPE-87-53, as reflected in Annex X, and requested the secretariat to submit it to WP.29 and AC.1 for consideration and vote at their June 2023 sessions as draft new supplement to the 07 Series of Amendments to UN Regulation No. 49.

55. The representative from OICA informed GRPE that OICA was exploring the possibility to also include hydrogen as a fuel in older series of amendments to UN Regulation No. 49. He noted that adding hydrogen was expected to be straight forward in the 06 series of amendments, and that an assessment was on-going for such inclusion in the 04 and 05 series of amendments.

Additional information concerning the 08 series of amendments pursuant to UN R154 (WLTP) and work on real-driving emissions testing.

30. The representative from the European Commission introduced ECE/TRANS/WP.29/GRPE/2023/2, GRPE-87-26-Rev.1 and GRPE-87-43 related to the new 08 series of amendments to UN regulation No. 83. With this new series of amendments it will be equivalent to the European emission level Euro 6e. The representative from OICA introduced GRPE-87-10 and requested additional time to scrutinize GRPE-87-26-Rev.1. The representative from the UK highlighted the importance of this proposal for their regulatory framework and hoped for a final proposal to be adopted during this session of GRPE.

43. Following additional activities from all concerned parties during the session, the representative from the European Commission introduced GRPE-87-49 as a revised proposal for a new UN Regulation on Global RDE which represented a consensus on the various proposals presented previously.

44. The representatives from France, Germany, Italy, Japan, the UK and the European Commission supported the proposal. GRPE agreed with the content of GRPE-87-49.

45. GRPE adopted ECE/TRANS/WP.29/GRPE/2023/3 as amended by GRPE-87-49, as reflected in Addendum 2, and requested the secretariat to submit it to WP.29 and AC.1 for consideration and vote at their June 2023 sessions as draft new UN Regulation No. [XXX] on Global RDE.

Proposal to postpone the work on a GTR until after pending national/regional legislation has been enacted (e.g., Euro 7 and US proposal on light vehicle emissions).

46. The representative from the European Commission, Co-chair of the IWG on RDE, introduced GRPE-87-51, requested a delay in the authorization to develop a new UN GTR on Global RDE. The representative from the US, Co-Chair of the IWG on RDE, supported the proposal and added that the activities would be paused and not ended, as the topic was important and should be tackled as soon as possible. As consequence, the Chair declared that the activities of the IWG on RDE are put on-hold until further notice.

47. GRPE adopted GRPE-87-51, as reflected in Annex IX to the session report, and requested the secretariat to submit it to WP.29 and AC.1 for consideration and vote at their June 2023 sessions as revised authorization to develop a UN GTR on Global Real Driving Emissions (RDE).

99. The Chair introduced GRPE-87-29 and GRPE-80-04-Rev.1. The representative from the European Commission provided written comment to both documents that were discussed during the session.

100. GRPE adopted GRPE-87-54-Rev.1 as a revised GRPE list of priorities to be shared with WP.29/AC.2 and to be included in the 2023 programme of work of WP.29.

101. GRPE adopted GRPE-87-55 as an update to the GRPE emission topics list to be used as an internal reference for longer list of potential topics to be addressed by GRPE in the future.

Input towards resolving interpretation issues resulting in omission from testing for some vehicle propulsion modes.

Proposal to align the Regulation with the latest regional requirements.

Proposal to align the Regulation with the latest regional requirements.

COMMISSION RECOMMENDATION (EU) 2023/688 of 20 March 2023 on particle number measurement for the periodic technical inspection of vehicles equipped with compression ignition engines.