GAR | GRBP/2022/22

Document Title: UN R75: Proposal for amendments

Document Reference Number: GRBP/2023/7

Description:

Proposal to explicitly allow other technical measurement solutions of the tyre overall width by removing the words “by calliper”, add the definition of “special tyre”, clarify the definition of “snow tyre”, to enable the case of a “special tyre” fulfilling the definition of a “snow” tyre, clarify application of the suffix “M/C”, and make editorial corrections and clarifications.

Submitted by: ETRTO

Meeting Session: 77th GRBP session (7-10 Feb 2023)

Document date: 25 Nov 22 (Posted 25 Nov 22)

Document status: Formal GR review change

This document concerns UN Regulation No. 75 | Motorcycle and Moped Tires.

Proposal to address the following:

1. “Special use” tyres with nominal rim diameters larger than those listed in the present table (rim diameters up to 42, section widths up to 750 mm and overall diameters over 2 meters) and with speed symbols F and above have been announced in the European market as original equipment of N3G “special purpose vehicles” (i.e., special high speed self-propelled vehicles for agricultural and forestry use, like wood choppers).

2. Existing multi-purpose tyres (MPT) (classified as “special use tyres” as per paragraphs 2.5.3. and 3.1.13.), already type approved since years, have a tread pattern with lugs or cleats in addition to those with blocks, as evidenced by the attached slide showing some examples. It is proposed to amend paragraph 6.3.1. by clarifying that lugs and cleats are possible shapes of the mentioned blocks.

3. Testing tyres with very large overall diameters, sometimes over 2 m, on a test drum with a diameter of 1.70 m ± 1 % would be unpracticable. For practical reasons most of those
tyres are regularly tested on drums with a diameter of 3 m or even larger. The proposal carries equivalence provisions from UN R106 to justify the equivalence of the test method as required by Annex 7 in point 4 “Equivalent test methods" and clarifies based on UN R117 the formula already used indirectly.

4. Some commercial vehicles are often used in the market at a reduced speed of 70 km/h with a load-capacity of the tyres increased as per load/speed combination defined in the table of Annex 8. The proposal would allow use of the speed category symbol E (but restrict it to “additional service description”) to provide this information.

5. Considering that 32 km/h is already a floor value for the test-drum speed for diagonal tyres, ETRTO proposes not to apply to E speed category symbol tyres the linear decrease of
the test-drum speed in function of the decrease of the speed category symbol by keeping, for safety reasons, the same test-drum speed as for F speed category symbol tyres, i.e., 32 km/h).

6. In the case of additional service descriptions mentioned in paragraph 6.2.5.1., it is proposed not to perform the additional load/speed test because the load-capacity approximates with a negligeable difference the reduction or the increase in percentage of the nominal load/speed combination applicable to the nominal speed category symbol (see Annex 8).

7. Type approval applications for radial tyres with load capacity index greater or equal to 122 and without the additional marking “LT”, or “C” have been done in the past for the speed category symbol N for which the load/speed endurance test procedure is not described in Annex 7, Appendix 1. To type approve such tyres the test speed was separately defined by the different involved Type Approval Authorities. In order to harmonize the test procedure to be used for the type approval of such tyres, it is proposed to amend the Annex 7, Appendix 1 by introducing testing conditions in line with the rule applied for defining the test speed of radial tyres with load capacity index greater or equal to 122 (i.e. starting from 32 km/h set for F speed category symbol, the test speed is increased by 8 km/h respect to the one set for the previous speed category symbol).

8. The definition of “snow tyre” is amended to clarify that “snow tyres” are not only suitable for the use in snow conditions but also on mud and by replacing the term “maintain vehicle motion” (i.e. keeping the vehicle speed and direction of movement constant) by a more general concept of “controlling vehicle motion” (i.e. also being able to change the vehicle speed and direction of movement as intended).

9. It is proposed to explicitly allow other technical measurement solutions of the tyre overall width by removing the words “by caliper” which fix a technical limitation. The removal of this technical limitation would be advisable following the principle of not stopping the technical innovations.

10. Editorial corrections are introduced to ensure that the terms “load-capacity” and “speed category symbol” are used consistently throughout the text and to remove some typing mistakes present in the current text.

Document Title: GTR 20: Questions on the presentation “Venting of Gases Test for Electric Vehicles”

Document Reference Number: EVS-25-E2TG-0301

Submitted by: JASIC

Meeting Session: 25th EVS session (29 Nov-2 Dec)

Document date: 25 Nov 22 (Posted 25 Nov 22)

This document concerns GTR No. 20 | Electric Vehicle Safety.
This submission is related to the following document(s):

EVS-25-E2TG-0300 | GTR 20: Venting of Gases Test for Electric Vehicles Available formats: pdf

Document Title: Presentation list for the 25th EVS informal group session

Document Reference Number: EVS-25-A02

Meeting Session: 25th EVS session (29 Nov-2 Dec)

Document date: 25 Nov 22 (Posted 25 Nov 22)

This document concerns GTR No. 20 | Electric Vehicle Safety.

Document Title: GTR 20: Vibration Profile task force status report

Document Reference Number: EVS-25-E3VP-0100

Meeting Session: 25th EVS session (29 Nov-2 Dec)

Document date: 25 Nov 22 (Posted 25 Nov 22)

This document concerns GTR No. 20 | Electric Vehicle Safety.

Document Title: GTR 20: Thermal Propagation task force status report

Document Reference Number: EVS-25-E1TP-0100

Meeting Session: 25th EVS session (29 Nov-2 Dec)

Document date: 25 Nov 22 (Posted 25 Nov 22)

This document concerns GTR No. 20 | Electric Vehicle Safety.

Document Title: GTR 20: Replies to questions on gas emissions

Document Reference Number: EVS-25-K04

Description:

JRC replies to the questions received from the 24th EVS informal group session on the presentation “Gas emissions from thermal runaway and propagation of Li-ion battery cells in short stack and module experiments”.

Submitted by: JRC

Meeting Session: 25th EVS session (29 Nov-2 Dec)

Document date: 25 Nov 22 (Posted 25 Nov 22)

This document concerns GTR No. 20 | Electric Vehicle Safety.
This submission is related to the following document(s):

EVS-24-E1TP-0401 | Gas emissions from thermal runaway and propagation of Li-ion battery cells in short stack and module experiments Available formats: pdf

Document Title: GTR 20: Gas emissions in thermal runaway propagation experiments

Document Reference Number: EVS-25-E2TG-0400

Submitted by: EC

Meeting Session: 25th EVS session (29 Nov-2 Dec)

Document date: 25 Nov 22 (Posted 25 Nov 22)

This document concerns GTR No. 20 | Electric Vehicle Safety.

21 Feb 2022 UN R41 Revision 2 | Amendment 11 (Motorcycle Noise)

Regulation:	UN Regulation No. 41 \| Motorcycle Noise
Document:	Revision 2 \| Amendment 11
Corresponds to:	04 series of amendments \| Supplement 10 (Entered into force on 7 Jan 2022)
Based on:	Document WP.29/2021/77 Proposal to correct some references, which need to be updated as a consequence of document WP.29/2020/70, adopted at the June 2020 WP.29 session, notably Paragraph 5.4.1 renumbered as paragraph 5.5.1. Paragraphs 5.4. and 5.5. respectively renumbered as paragraphs 5.5. and 5.6.

21 Feb 2022 UN R30 Revision 3 | Amendment 10 (Pneumatic Tires)

Regulation:	UN Regulation No. 30 \| Pneumatic Tires
Document:	Revision 3 \| Amendment 10
Corresponds to:	02 series of amendments \| Supplement 24 (Entered into force on 7 Jan 2022)
Based on:	Document WP.29/2021/75 Proposal to amend the extended mobility tyre (EMT) symbol following the detection of dimensional inconsistencies within the International Organization for Standardization Working Group (ISO) TC31/SC3/WG19, where the dimension “0,33h” was judged wrong and constituting an unnecessary over constraint and to amend the inflation value to be used for the tyre conditioning when assessing the “flat tyre running mode” of “run flat tyres” and of “extended mobility tyres”.

21 Feb 2022 UN R24 Revision 2 | Amendment 6 (Diesel Engine Emissions)

Regulation:	UN Regulation No. 24 \| C.I. Engine Emissions and Net Power
Document:	Revision 2 \| Amendment 6
Corresponds to:	03 series of amendments \| Supplement 6 (Entered into force on 7 Jan 2022)
Based on:	Document WP.29/2021/67 Proposal to clarify the scope and application of the regulation.

21 Dec 2021 UN R152 Amendment 4 (Light Vehicle AEBS)

Regulation:	UN Regulation No. 152 \| Automatic Emergency Braking for M1/N1 vehicles
Document:	Amendment 4
Corresponds to:	00 series of amendments \| Supplement 3 (Entered into force on 30 Sep 2021)
Based on:	Document WP.29/2021/15 Proposal to improve the Appendix 2 Annex 3 for assessing robustness against false reaction, to introduce new provisions for automatic deactivation of AEBS, and to improve the text in other instances.

21 Dec 2021 UN R152 Revision 1 | Amendment 3 (Light Vehicle AEBS)

Regulation:	UN Regulation No. 152 \| Automatic Emergency Braking for M1/N1 vehicles
Document:	Revision 1 \| Amendment 3
Corresponds to:	02 series of amendments (Entered into force on 30 Sep 2021)
Based on:	Document WP.29/2021/18 Proposal to introduce provisions under a car-to-bicycle test scenario.

21 Dec 2021 UN R152 Revision 1 | Amendment 2 (Light Vehicle AEBS)

Regulation:	UN Regulation No. 152 \| Automatic Emergency Braking for M1/N1 vehicles
Document:	Revision 1 \| Amendment 2
Corresponds to:	01 series of amendments \| Supplement 2 (Entered into force on 30 Sep 2021)
Based on:	Document WP.29/2021/16 Proposal to improve the Appendix 2 Annex 3 for assessing robustness against false reaction, to introduce new provisions for automatic deactivation of AEBS, and to improve the text in other instances.

8 Dec 2021 UN R106 Revision 2 | Amendment 9 (Agricultural Tires)

Regulation:	UN Regulation No. 106 \| Tires for Agricultural Vehicles
Document:	Revision 2 \| Amendment 9
Corresponds to:	00 series of amendments \| Supplement 19 (Entered into force on 30 Sep 2021)
Based on:	Document WP.29/2021/7 Proposal for alternative language regarding markings to avoid use of the term “moulded” which could be interpreted as a technical design restriction and to add a reference to “log-skidder” tyres.

8 Dec 2021 UN R75 Revision 2 | Amendment 6 (Motorcycle Tires)

Regulation:	UN Regulation No. 75 \| Motorcycle and Moped Tires
Document:	Revision 2 \| Amendment 6
Corresponds to:	00 series of amendments \| Supplement 19 (Entered into force on 30 Sep 2021)
Based on:	Document WP.29/2021/6 Proposal to Change the definition of the tyre size designation by including prefixes and suffixes as well as the code for the tyre structure Clarify the use of sizes listed in Annex 5 Move the definition of “reinforced” into a paragraph that is not subordinated to the definition of “Structure of a tyre” Correct references and typographical errors Rearrange paragraphs and amendments in order to increase readability Delete an unnecessary cross-reference to UN Regulation No. 54 Change the definition of “bias-belted” Amend the definition of “snow tyres” by replacing “ordinary (road-type) tyres” (which is not defined) by “normal tyre”, removing the note that snow tyres generally have more widely spaced ribs or blocks Include a general provision addressing the gap between the effective date of entry into force and the date of notification of the adoption of the Supplement to the Contracting Parties Keep the restriction of measurement of overall diameter after load/speed test only to diagonal tyres (For radial the variation of outer diameter of the tyre, measured six hours after the load/speed performance test as specified in paragraph 2 of Annex 7, is far below ±3.5 per cent from the outer diameter as measured before the test.) Remove use of the word “moulding” Resolve conflicting provisions in Annex 2 concerning the minimum size of the approval mark Clarify that mounting motorcycle tyres on motorcycle rims is the standard configuration and that “M/C” marking is optional for the sizes listed in Annex 5.

Regulation:	UN Regulation No. 41 \| Motorcycle Noise
Document:	Revision 2 \| Amendment 11
Corresponds to:	04 series of amendments \| Supplement 10 (Entered into force on 7 Jan 2022)
Based on:	Document WP.29/2021/77 Proposal to correct some references, which need to be updated as a consequence of document WP.29/2020/70, adopted at the June 2020 WP.29 session, notably Paragraph 5.4.1 renumbered as paragraph 5.5.1. Paragraphs 5.4. and 5.5. respectively renumbered as paragraphs 5.5. and 5.6.

Regulation:	UN Regulation No. 30 \| Pneumatic Tires
Document:	Revision 3 \| Amendment 10
Corresponds to:	02 series of amendments \| Supplement 24 (Entered into force on 7 Jan 2022)
Based on:	Document WP.29/2021/75 Proposal to amend the extended mobility tyre (EMT) symbol following the detection of dimensional inconsistencies within the International Organization for Standardization Working Group (ISO) TC31/SC3/WG19, where the dimension “0,33h” was judged wrong and constituting an unnecessary over constraint and to amend the inflation value to be used for the tyre conditioning when assessing the “flat tyre running mode” of “run flat tyres” and of “extended mobility tyres”.

Regulation:	UN Regulation No. 24 \| C.I. Engine Emissions and Net Power
Document:	Revision 2 \| Amendment 6
Corresponds to:	03 series of amendments \| Supplement 6 (Entered into force on 7 Jan 2022)
Based on:	Document WP.29/2021/67 Proposal to clarify the scope and application of the regulation.

Regulation:	UN Regulation No. 152 \| Automatic Emergency Braking for M1/N1 vehicles
Document:	Amendment 4
Corresponds to:	00 series of amendments \| Supplement 3 (Entered into force on 30 Sep 2021)
Based on:	Document WP.29/2021/15 Proposal to improve the Appendix 2 Annex 3 for assessing robustness against false reaction, to introduce new provisions for automatic deactivation of AEBS, and to improve the text in other instances.

Regulation:	UN Regulation No. 152 \| Automatic Emergency Braking for M1/N1 vehicles
Document:	Revision 1 \| Amendment 3
Corresponds to:	02 series of amendments (Entered into force on 30 Sep 2021)
Based on:	Document WP.29/2021/18 Proposal to introduce provisions under a car-to-bicycle test scenario.

Regulation:	UN Regulation No. 152 \| Automatic Emergency Braking for M1/N1 vehicles
Document:	Revision 1 \| Amendment 2
Corresponds to:	01 series of amendments \| Supplement 2 (Entered into force on 30 Sep 2021)
Based on:	Document WP.29/2021/16 Proposal to improve the Appendix 2 Annex 3 for assessing robustness against false reaction, to introduce new provisions for automatic deactivation of AEBS, and to improve the text in other instances.

Regulation:	UN Regulation No. 106 \| Tires for Agricultural Vehicles
Document:	Revision 2 \| Amendment 9
Corresponds to:	00 series of amendments \| Supplement 19 (Entered into force on 30 Sep 2021)
Based on:	Document WP.29/2021/7 Proposal for alternative language regarding markings to avoid use of the term “moulded” which could be interpreted as a technical design restriction and to add a reference to “log-skidder” tyres.

Regulation:	UN Regulation No. 75 \| Motorcycle and Moped Tires
Document:	Revision 2 \| Amendment 6
Corresponds to:	00 series of amendments \| Supplement 19 (Entered into force on 30 Sep 2021)
Based on:	Document WP.29/2021/6 Proposal to Change the definition of the tyre size designation by including prefixes and suffixes as well as the code for the tyre structure Clarify the use of sizes listed in Annex 5 Move the definition of “reinforced” into a paragraph that is not subordinated to the definition of “Structure of a tyre” Correct references and typographical errors Rearrange paragraphs and amendments in order to increase readability Delete an unnecessary cross-reference to UN Regulation No. 54 Change the definition of “bias-belted” Amend the definition of “snow tyres” by replacing “ordinary (road-type) tyres” (which is not defined) by “normal tyre”, removing the note that snow tyres generally have more widely spaced ribs or blocks Include a general provision addressing the gap between the effective date of entry into force and the date of notification of the adoption of the Supplement to the Contracting Parties Keep the restriction of measurement of overall diameter after load/speed test only to diagonal tyres (For radial the variation of outer diameter of the tyre, measured six hours after the load/speed performance test as specified in paragraph 2 of Annex 7, is far below ±3.5 per cent from the outer diameter as measured before the test.) Remove use of the word “moulding” Resolve conflicting provisions in Annex 2 concerning the minimum size of the approval mark Clarify that mounting motorcycle tyres on motorcycle rims is the standard configuration and that “M/C” marking is optional for the sizes listed in Annex 5.

Document GRBP/2022/22

UN R117: Proposal for a Supplement to the 03 series of amendments

76th GRBP session (5-7 Sep)

Status: GR amended and approved

Proposal from the Worn Tyres working group to improve precision of the test procedures for measuring the wet adhesion of tyres in a worn state by using a moulded SRTT16 reference tyre (instead of a buffed tyre), to introduce new transitional provisions related to this change, to extend corrections already made to thee 02 series to the 03 series and make additional editorial corrections, and to define the range for tyre inflation vis-à-vis rim size to reduce uncertainties in measuring tread depth.

Discussions and Outcomes

77th GRBP session (7-10 Feb 2023)

GRBP/2023/2

76th GRBP session (5-7 Sep)

Agenda item 4. (c) | UN Regulation No. 117 (Tyre rolling resistance, rolling noise and wet grip)

GRBP-76-05

GRBP-76-34

20. The expert of IWG WGWT presented their proposals for the moulded standard reference test tyre and wet grip of C2, C3, and some clusters of C1 tyres in a worn state (ECE/TRANS/WP.29/GRBP/2022/22, ECE/TRANS/WP.29/GRBP/2022/23, GRBP-76-02 and GRBP-76-05). The expert from ETRTO introduced additional amendments (GRBP-76-24-Rev.1, GRBP-76-33-Rev.1 and GRBP-76-34).

21. GRBP adopted ECE/TRANS/WP.29/GRBP/2022/22, as amended by GRBP-76-05 and GRBP-76-34, subject to the removal of the square brackets, and requested the secretariat to submit it for consideration and vote at the March 2023 sessions of WP.29 and AC.1 as draft Supplement 1 to the 03 series of amendments to UN Regulation No. 117.

22. GRBP adopted ECE/TRANS/WP.29/GRBP/2022/23, as amended by GRBP-76-02, GRBP-76-33-Rev.1, and GRBP-76-24-Rev.1, and requested the secretariat to submit it for consideration and vote at the March 2023 sessions of WP.29 and AC.1 as part of the draft new 04 series of amendments to UN Regulation No. 117.

44th WT session (27 Jul)

WT-44-05/Rev.1