136. Submitted for consideration and vote, the proposal for Amendment 4 to UN GTR No. 4 on WHDC (ECE/TRANS/WP.29/2021/79 and ECE/TRANS/WP.29/2021/80) was adopted on 22 June 2021 by consensus vote of the following contracting parties present and voting: Australia, Canada, China, the European Union (representing Cyprus, Finland, France, Germany, Hungary, Italy, Lithuania, Luxembourg, the Netherlands, Romania, Slovakia, Slovenia, Spain and Sweden), India, Japan, Norway, the Russian Federation, South Africa, United Kingdom of Great Britain and Northern Ireland and United States of America.

137. The representatives from the Republic of Korea, Malaysia and Tunisia abstained from voting.

Proposal to improve the text of provisions introduced in Amendment 3 to UN GTR No. 4.

136. Submitted for consideration and vote, the proposal for Amendment 4 to UN GTR No. 4 on WHDC (ECE/TRANS/WP.29/2021/79 and ECE/TRANS/WP.29/2021/80) was adopted on 22 June 2021 by consensus vote of the following contracting parties present and voting: Australia, Canada, China, the European Union (representing Cyprus, Finland, France, Germany, Hungary, Italy, Lithuania, Luxembourg, the Netherlands, Romania, Slovakia, Slovenia, Spain and Sweden), India, Japan, Norway, the Russian Federation, South Africa, United Kingdom of Great Britain and Northern Ireland and United States of America.

137. The representatives from the Republic of Korea, Malaysia and Tunisia abstained from voting.

Proposal to improve the text of provisions introduced in Amendment 3 to UN GTR No.4.

30. The representative from Japan introduced ECE/TRANS/WP.29/GRPE/2021/7, as amended by GRPE-82-09-Rev.1. The representative from EC highlighted an error that had been omitted, and a correction had been introduced during the meeting in GRPE-82-09-Rev.1.

31. GRPE adopted ECE/TRANS/WP.29/GRPE/2021/7 and GRPE-82-09-Rev.1 as amended by Addendum 2 to this report. GRPE also adopted the technical report (based on extracts from ECE/TRANS/WP.29/GRPE/2021/7) as reproduced in Annex V. GRPE requested the secretariat to submit Addendum 2 and Annex V to WP.29 and Executive Committee of the 1998 Agreement (AC.3) for consideration and vote at their June 2021 sessions as draft Amendment 4 to UN GTR No. 4.

Proposal to correct the improper or confusing provisions described in Amendment 3 to UN GTR No.4.

30. The representative from Japan introduced ECE/TRANS/WP.29/GRPE/2021/7, as amended by GRPE-82-09-Rev.1. The representative from EC highlighted an error that had been omitted, and a correction had been introduced during the meeting in GRPE-82-09-Rev.1.

31. GRPE adopted ECE/TRANS/WP.29/GRPE/2021/7 and GRPE-82-09-Rev.1 as amended by Addendum 2 to this report. GRPE also adopted the technical report (based on extracts from ECE/TRANS/WP.29/GRPE/2021/7) as reproduced in Annex V. GRPE requested the secretariat to submit Addendum 2 and Annex V to WP.29 and Executive Committee of the 1998 Agreement (AC.3) for consideration and vote at their June 2021 sessions as draft Amendment 4 to UN GTR No. 4.

Proposal to update the PMP mandate with a view to delivering the following results:

• Proposal for a new methodology for exhaust PN measurement with a d50 cut-off size reduced to 10 nm: June 2020
• Proposal for HD raw exhaust PN sampling and extension of sub-23 nm procedure to HD engines: January 2021
• Proposal for LD PN-PEMS 10 nm specifications : June 2021 (tbc)
• Proposal for a common test procedure for the measurement of particle brake emissions from conventional ICE LDVs: December 2021.

40. The Chair of the IWG on PMP introduced GRPE-81-13 on a revision of the Terms of References (ToRs) of the IWG to include on-road test procedure definitions, which are expected to be developed for light- and heavy- duty application concerning the sub-23 nm PN emissions. GRPE agreed to revise the ToRs of the IWG on PMP as proposed in GRPE-81-13.

70. The Chair introduced GRPE-80-04-Rev.1 as the GRPE list of emission topics that GRPE would regularly discuss and may decide to work on if and when resources are available. He reminded this list did not constitute a declaration of intent that the topics included would be tackled by GRPE in the future. He also recalled that keeping such a list open and regularly updated would allow GRPE to be more reactive when new issues arose and ready to cover new topics when pertinent. He reiterated GRPE-80-04-Rev.1 was to remain an GRPE internal document for its own use and information.

71. The representative from OICA requested more information about brake wear emissions topics and how to tackle this topic and by which GR. He also asked whether a more extensive definition of geofencing was available. The representative from EC thought brake emissions would preferably be considered at a vehicle scale and would preferably be considered in GRPE. The Chair emphasized that there would be close cooperation with other GRs working on brake issues, and confirmed GRPE was the appropriate GR to develop the new provisions on brake wear emissions.

72. The representative from India requested more clarity about the destination of the potential items, whether UN Regulation or UN GTR. The Chair clarified that the emission topic list was a starting point and its aim was not to contain any prescription on to which agreement each topic would go.

73. The representative from Spain asked whether the inclusion of life cycle analysis was referring to all vehicle and energy types. The Chair replied that life cycle analysis was still a nascent activity where legislative pathway still had to be defined. New energy types for vehicles needed to have a broad coverage, and he felt GRPE was not in a position to work on this yet.

74. The Chair introduced GRPE-80-05-Rev.2 as the draft list of priority for GRPE that WP.29/AC.2 requested each GR to send so that the coordination of tasks could be better overseen by WP.29/AC.2.

75. The representative from the Netherlands thanked the Chair for putting together this list and insisted that cars were more and more becoming computers on wheels and that vehicles would therefore evolve over their lifetime through software updates for example and that the issue of lifetime compliance was of high importance in his view.

76. The representative from the United Kingdom of Great Britain and Northern Ireland insisted tyre wear particulates and heavy duty hybrids were two areas of particular concern for his country and was happy to see those topics reflected in the list.

77. GRPE adopted GRPE-80-05-Rev.2 as amended during the session (GRPE-80-05-Rev.3) and requested the Chair and secretariat to send it to WP.29 secretariat for further consideration by WP.29/AC.2.

70. The Chair introduced GRPE-80-04-Rev.1 as the GRPE list of emission topics that GRPE would regularly discuss and may decide to work on if and when resources are available. He reminded this list did not constitute a declaration of intent that the topics included would be tackled by GRPE in the future. He also recalled that keeping such a list open and regularly updated would allow GRPE to be more reactive when new issues arose and ready to cover new topics when pertinent. He reiterated GRPE-80-04-Rev.1 was to remain an GRPE internal document for its own use and information.

71. The representative from OICA requested more information about brake wear emissions topics and how to tackle this topic and by which GR. He also asked whether a more extensive definition of geofencing was available. The representative from EC thought brake emissions would preferably be considered at a vehicle scale and would preferably be considered in GRPE. The Chair emphasized that there would be close cooperation with other GRs working on brake issues, and confirmed GRPE was the appropriate GR to develop the new provisions on brake wear emissions.

72. The representative from India requested more clarity about the destination of the potential items, whether UN Regulation or UN GTR. The Chair clarified that the emission topic list was a starting point and its aim was not to contain any prescription on to which agreement each topic would go.

73. The representative from Spain asked whether the inclusion of life cycle analysis was referring to all vehicle and energy types. The Chair replied that life cycle analysis was still a nascent activity where legislative pathway still had to be defined. New energy types for vehicles needed to have a broad coverage, and he felt GRPE was not in a position to work on this yet.

74. The Chair introduced GRPE-80-05-Rev.2 as the draft list of priority for GRPE that WP.29/AC.2 requested each GR to send so that the coordination of tasks could be better overseen by WP.29/AC.2.

75. The representative from the Netherlands thanked the Chair for putting together this list and insisted that cars were more and more becoming computers on wheels and that vehicles would therefore evolve over their lifetime through software updates for example and that the issue of lifetime compliance was of high importance in his view.

76. The representative from the United Kingdom of Great Britain and Northern Ireland insisted tyre wear particulates and heavy duty hybrids were two areas of particular concern for his country and was happy to see those topics reflected in the list.

77. GRPE adopted GRPE-80-05-Rev.2 as amended during the session (GRPE-80-05-Rev.3) and requested the Chair and secretariat to send it to WP.29 secretariat for further consideration by WP.29/AC.2.

69. The Chair introduced GRPE-83-35 as revised list of priorities to be shared with WP.29. The representative from the EC called for prior consultation within GRPE before including new element in the priority list.

70. The representative from Japan stated that carbon neutrality was now a crucial issue in the country and required the issue of life cycle analysis to be considered by GRPE as candidate to be included in the priority list, as was already the case in the GRPE emission items list (GRPE-80-04-Rev.1). the Chair agreed to consider this at the next session of GRPE in November 2021.

GRPE to consider the proposal from the expert from OICA for corrigendum to GTR4

35. The representative from OICA introduced GRPE-80-25 containing draft amendments to UN GTR No. 4, mainly correcting errors found in some formulas in the latest version of the text. GRPE welcomed the proposal and was looking forward to receiving a working document at the next session of GRPE in June 2020.

35. The expert from OICA introduced GRPE-77-08 on the harmonization of Heavy Duty Fuel Economy measurements. He proposed to organize a one-day workshop during the next session of GRPE in January 2019 to exchange information on the different approaches used by the CPs to measure fuel economy from heavy duty vehicles.

36. The expert from EC supported the idea to have a workshop organized as part of the January 2019 session of GRPE.

37. The secretariat agreed to assist in the organization of the workshop and help manage the coordination with other meetings from IWGs.

OICA proposal to pursue gradual harmonization of heavy-duty vehicle fuel efficiency standards, beginning with an effort to define a uniform measurement procedure through a global technical regulation.

52. The expert from OICA briefly introduced GRPE-76-20 on non-harmonized fuel economy provisions for heavy duty vehicles in various countries and regions. The expert from OICA proposed that a workshop would be organized in order to discuss this subject. The secretariat agreed to collaborate in hosting the workshop. GRPE agreed to add a corresponding item on the agenda of GRPE.

Voting form for consideration of amendment 2 to GTR 3 on motorcycle brakes and amendment 3 to GTR 4 on heavy-duty vehicle emissions test procedures.

101. Submitted for consideration and vote, the proposal for Amendment 2 to draft UN GTR on motorcycle braking (ECE/TRANS/WP.29/2015/38, ECE/TRANS/WP.29/2015/39, ECE/TRANS/WP.29/AC.3/37) was established in the UN Global Registry on 12 March 2015 by consensus vote of the following Contracting Parties present and voting: Australia, Canada, China, European Union (voting for Cyprus, Finland, France, Germany, Hungary, Italy, Lithuania, Luxembourg, Netherlands, Romania, Slovakia, Slovenia, Spain, Sweden and the United Kingdom), India, Japan, Norway, Republic of Korea, Republic of Moldova, Russian Federation, South Africa and United States of America.

102. AC.3 adopted ECE/TRANS/WP.29/2015/38 with the following typographical change by introducing a missing comma:

The amendments to page 5, para. 3.1.9, second line<§i>, correct to read: