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01 series of amendments
| Supplement 11
(2009)
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1
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11
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Corrigendum 1 to Revision 2
(2010)
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02 series of amendments
(2011)
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Proposal to introduce minimum performance standards for replacement brake discs and drums for vehicles of categories M, N and O.
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WP.29/2011/6
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2
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02 series of amendments
| Supplement 1
(2012)
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This proposal to establish a “bedding in” procedure was adopted at the March 2012 WP.29 session as amended by paragraph 64 of the session report. (Click the meeting link to access the report.)
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WP.29/2012/4
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Discussion from 156th WP.29 session
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64. Agenda item 4.7.2, UN Regulation No. 90, document ECE/TRANS/WP.29/2012/4,
Page 11, Annex 11, paragraph 4.2.2.2.2., amend to read:
“4.2.2.2.2. Test programme (brake drum high load test).
Table A11/4.2.2.2.2.
| Test provision | High load test |
| “Bedding in” procedure |
200 brake applications
Initial speed: 60 km/h
Final speed: 5 km/h
dm alternating between 1 m/s2 and 2 m/s2
Initial temperature: ≤ 200 °C (beginning at room temperature)
Alternatively bedding may be omitted if the applicant for approval does not consider it to be necessary |
| Type of braking | Braking to less than 5 km/h |
| Total number of brake applications | 150 |
| Initial brake drum temperature at each brake application | ≤ 100 °C |
Brake applications
from
to |
60 km/h
≤ 5 km/h |
| Brake torque set to produce a deceleration of | 6 m/s² |
| Cooling (also deviating from paragraph 3.2.3. of this annex) | Permitted |
22. The expert from CLEPA presented GRRF-72-15, superseding ECE/TRANS/WP.29/GRRF/2012/3, on the “Bedding in” test procedure for brake drums. GRRF adopted the proposal as reproduced in Annex VI and requested the secretariat to submit it to WP.29 and AC.1, as a Corrigendum to ECE/TRANS/WP.29/2012/4, for consideration at their March 2012 sessions.
23. The expert from FEMFM introduced GRRF-72-05 superseding ECE/TRANS/WP.29/GRRF/2012/3 clarifying the meaning of “identical” brake linings.
Following the discussion, he presented, jointly with the expert from Spain, a revised proposal (GRRF-72-05-Rev.1).
GRRF supported the approach but noted some concerns and agreed to resume consideration of this subject at its next session. This will be on the basis of an official document to be prepared by FEMFM jointly with Spain, the Russian Federation and OICA.
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This proposal (WP.29/2012/4, as amended by para. 64, was adopted by the World Forum. Thirty-two Contracting Parties out of the 40 applying UN R90 were present for the vote by AC.1. Thirty-two voted in favor with zero against and zero abstaining.
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2
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1
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Corrigendum 1 to Revision 3
(2012)
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02 series of amendments
| Supplement 1
| Corrigendum 1
(2012)
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Proposal from the Forum secretariat to correct Revision 3 of the Regulation, aligning the English and French texts to the Russian version.
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WP.29/2012/117
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Discussion from 158th WP.29 session
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55. Agenda item 4.12.1, Regulation No. 90, document ECE/TRANS/WP.29/2012/117:
Annex 11, paragraph 4.2.1.2.1.2, correct the paragraph number to read: 4.2.1.2.1.2.
Annex 12, paragraph 4.2.1.2.1.2, correct the paragraph number to read: 4.2.1.2.1.2.
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2
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1
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1
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02 series of amendments
| Supplement 2
(2015)
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Proposal to improve the definition of “identical” parts as applied to replacement brake discs and drums and to introduce an “identical” part definition for brake linings. This proposal simplifies the approval process and was adopted by the Working Party on Brakes and Running Gear (GRRF) at its 67th session as amended by Annex IV of the session report and based on a proposal by OICA, CLEPA and FEMFM (document GRRF/2014/9 ).
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WP.29/2014/49
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Discussion from 163rd WP.29 session
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No objections to the proposal which is passed for consideration to adopt during the AC.1 session.
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2
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2
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02 series of amendments
| Supplement 3
(2017)
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Proposal to introduce provisions for the approval of replacement brake discs for L-category (motorcycle and related) vehicles, to remove tables specifying general values for replacement discs and drums that are identical to the original, change the maximum permitted thickness variation of discs for medium and heavy vehicles from 0.030 mm to 0.040 mm, and clarify the text in order to avoid additional administrative and financial costs to the applicant due to misinterpretation of the intent of the text.
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WP.29/2016/58
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Discussion from 169th WP.29 session
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25. The expert from CLEPA introduced GRRF-86-40 proposing to amend ECE/TRANS/WP.29/2016/58, which was prepared on the basis of three documents with conflicting provisions. The secretariat informed GRRF that ECE/TRANS/WP.29/2016/58 was adopted by AC.1 as Supplement 3 to UN Regulation No. 90 and that the corrections proposed could not be adopted as drafted. The secretariat agreed to prepare a revised version that could potentially be adopted (GRRF-86-40-Rev.1) by AC.1 as a Supplement 4.
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This proposal (WP.29/2016/58) was adopted by the World Forum. Thirty-four Contracting Parties out of the 42 applying UN R90 were present for the vote by AC.1. Thirty-four voted in favor with zero against and zero abstaining.
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2
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3
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02 series of amendments
| Supplement 4
(2018)
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Proposal to expand the scope of UN R90 to include requirements for the approval of replacement brake lining assemblies for L-category vehicles.
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WP.29/2018/12
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Discussion from 174th WP.29 session
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91. In ECE/TRANS/WP.29/2018/12, on page 4, for “Qp”, read “qp”.
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This proposal (WP.29/2018/12, as amended by para. 91, was adopted by the World Forum. Thirty-three Contracting Parties out of the 43 applying UN R90 were present for the vote by AC.1. Thirty-three voted in favor with zero against and zero abstaining.
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2
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4
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02 series of amendments
| Supplement 5
(2020)
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Proposal to align approval numbers and markings under UN R90 with Schedule 4 of Revision 3 to the 1958 Agreement. Please note that WP.29 adopted document WP.29/2019/47 as Supplement 5 to the 02 series of amendments to UN R90 during its June 2019 session. Therefore, this proposal (if adopted) would be Supplement 6.
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WP.29/2020/8
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This proposal (WP.29/2020/8) was adopted by the World Forum. Thirty-five Contracting Parties out of the 46 applying UN R90 were present for the vote by AC.1. Thirty-five voted in favor with zero against and zero abstaining.
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2
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5
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02 series of amendments
| Supplement 6
(2020)
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2
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6
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02 series of amendments
| Supplement 7
(2022)
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Proposal from GRVA to replace the specification of the type and size of brake caliper and brake disc for brake lining CoP assessment with specifications for a pad area and thickness of the original approval. The original specification corresponds to obsolete caliper and rotor configurations no longer in widespread use.
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WP.29/2021/139
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This proposal (WP.29/2021/139) was adopted by the World Forum. Thirty-three Contracting Parties out of the 46 applying UN R90 were present for the vote by AC.1. Thirty-two voted in favor with zero against and one abstaining.
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2
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7
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02 series of amendments
| Supplement 8
(2022)
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Proposal to allow discs with a different geometry to be included in the same group as long as the disc itself is subject to lower thermal and mechanical stresses than the reference disc in order to improve testing efficiency.
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WP.29/2022/17
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This proposal (WP.29/2022/17) was adopted by the World Forum. Thirty-three Contracting Parties out of the 47 applying UN R90 were present for the vote by AC.1. Thirty-three voted in favor with zero against and zero abstaining.
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2
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8
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02 series of amendments
| Supplement 11
(Adopted by WP.29)
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Proposal to clarify the packaging and labelling requirements for some types of brake lining assemblies, which could be fitted on various different applications and to allow the option of using a QR code (or another type of digital data carrier) to replace some information printed on or included in the packaging.
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WP.29/2023/130
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This proposal (WP.29/2023/130) was adopted by the World Forum. Thirty-five Contracting Parties out of the 48 applying UN R90 were present for the vote by AC.1. Thirty-five voted in favor with zero against and zero abstaining.
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2
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11
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02 series of amendments
| Supplement 10
(Adopted by WP.29)
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Proposal from GRVA to correct an error in para. 2.3. Weight reduction solutions for brake discs must yield a higher (not lower) ratio between vehicle kinetic energy and mass of the disc braking surface than the reference disc.
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WP.29/2022/148
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This proposal (WP.29/2022/148) was adopted by the World Forum. Thirty-two Contracting Parties out of the 47 applying UN R90 were present for the vote by AC.1. Thirty-two voted in favor with zero against and zero abstaining.
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2
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10
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02 series of amendments
| Supplement 9
(Adopted by WP.29)
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2
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9
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01 series of amendments
| Supplement 12
(Adopted by WP.29)
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Proposal to clarify the packaging and labelling requirements for some types of brake lining assemblies, which could be fitted for various different applications and to allow the option of using a QR code (or another type of digital data carrier) to replace some information printed on or included in the packaging.
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WP.29/2023/129
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This proposal (WP.29/2023/129) was adopted by the World Forum. Thirty-five Contracting Parties out of the 48 applying UN R90 were present for the vote by AC.1. Thirty-five voted in favor with zero against and zero abstaining.
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1
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12
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