UN R90 Supplement 12 (02 series) · UNECE Regulation No. 90 (ECE R90) — Uniform provisions concerning the approval of replacement brake lining assemblies, drum-brake linings and discs and drums for power-driven vehicles and their trailers.
UN R90 — Supplement 12 to the 02 series of amendments
Supplement 11 → 12
- What changed
- Annex 1A has a new item 8.3. for a description of the burnishing procedure used during the type approval tests.
- Item 1. of Annex 1A now reads “If applicable, name and address of manufacturer's representative” instead of “Applicant’s name and address”.
- Paragraph 4.8. is deleted. It said that a Unique Identifier (UI) described in Schedule 5 to the 1958 Agreement may not replace the approval markings required by this Regulation.
- Why
- The bedding procedure in UN Regulation No. 90 has a lot of flexibility. The relevant authority or technical service does not know which bedding procedure was used for the type approval tests.
- The terms “applicant” and “manufacturer” on the communication form differ from those used in most other UN Regulations.
- WP.29 adopted a proposal in March 2025 that puts the implementation of the Unique Identifier (UI) marking on hold.
Q1What changed3 changes
Burnishing procedure on the Annex 1A communication form (para. 8.3.)
Annex 1A has a new item 8.3.: “Description of the burnishing procedure used during the type approval tests:”. The Annex 1A communication form is for a replacement brake lining assembly or replacement drum brake lining.
Manufacturer's representative on the Annex 1A communication form (para. 1.)
Item 1. of Annex 1A now reads “If applicable, name and address of manufacturer's representative”. Before, it read “Applicant’s name and address”.
Ban on the Unique Identifier (UI) deleted (para. 4.8.)
This supplement deletes paragraph 4.8. It said that a Unique Identifier (UI) described in Schedule 5 to the 1958 Agreement may not replace the approval markings required by this Regulation.
Q2Why it changed
- Proposed by
- Expert from the United Kingdom of Great Britain and Northern Ireland (Annex 1A); expert from the Netherlands (paragraph 4.8.)
- Working party
- GRVA, 22nd session (June 2025)
Reasons
Market surveillance activities by the United Kingdom of Great Britain and Northern Ireland and others identified many compliance issues with replacement brake linings. The bedding procedure described in UN Regulation No. 90 has a lot of flexibility, and this leads to inconsistent test results.
Sources (2)
“Market surveillance activities by United Kingdom of Great Britain and Northern Ireland and others have identified many compliance issues with replacement brake linings.”
“The bedding procedure described in UN Regulation No. 90 has a lot of flexibility, leading to inconsistent test results.”
This flexibility leads to problems for market surveillance. The relevant authority or technical service does not know the bedding procedure used for the type approval tests. A test failure due to insufficient bedding may also mask genuine conformity issues with the product.
Sources (2)
“The significant flexibility within the bedding procedure requirements leads to problems for market surveillance, because the relevant authority / technical service does not know the bedding procedure which was used for the type approval tests.”
“A test failure due to insufficient bedding may also mask genuine conformity issues with the product.”
The proposal requires the actual burnishing procedure used during type approval testing to be described on the communication form. The proposal says that relevant authorities will have access to the necessary information for independent market surveillance activities or Conformity of Production tests.
Sources (2)
“This proposal requires the actual burnishing procedure used during type approval testing to be described on the communication form.”
“This will ensure that relevant authorities have access to the necessary information to carry out independent market surveillance activities or Conformity of Production tests.”
The terms for the responsible entities on the UN Regulation No. 90 communication form (“applicant” and “manufacturer”) differ from those in most other UN Regulations. The proposal aims to align them with the terms in other UN Regulations and in Schedule 3 of the 1958 Agreement (“manufacturer” and “manufacturer’s representative”).
Sources (2)
“the terms used for the responsible entities on the UN Regulation No. 90 communication form (“applicant” and “manufacturer”) differ from those used in most other UN regulations”
“This proposal aims to align the terms with those used in other UN Regulations, and in Schedule 3 of the 1958 Agreement (“manufacturer” and “manufacturer’s representative”).”
In March 2025, WP.29 adopted document ECE/TRANS/WP.29/2025/17. It puts the implementation of the Unique Identifier (UI) marking on hold by amending Schedule 5 of the 1958 Agreement. Due to this amendment, the IWG on IWVTA considered amendments to UN Regulations necessary to delete all UI references. The UI concept was not yet implemented into the DETA database, so UI markings could also not have been applied yet.
Sources (4)
“The World Forum WP.29 adopted in March 2025 document ECE/TRANS/WP.29/2025/17”
“puts the implementation of the Unique Identifier (UI) marking on hold by amending Schedule 5 of the 1958 Agreement accordingly”
“Due to the amendment to Schedule 5 of the 1958 Agreement, the IWG on IWVTA considered amendments to UN Regulations necessary to delete all UI references.”
“As the UI concept was not yet implemented into the UNECE secure internet database ‘DETA’, UI markings could also not have been applied yet.”
Document trail
- 2025-04ProposalECE/TRANS/WP.29/GRVA/2025/35Proposal by the expert from the United Kingdom of Great Britain and Northern Ireland
- 2025-04ProposalECE/TRANS/WP.29/GRVA/2025/36Proposal by the expert from the Netherlands
- —Working party adoptsECE/TRANS/WP.29/GRVA/22Session report, para. 78
- 2025-08Sent to WP.29ECE/TRANS/WP.29/2025/140Text that GRVA sent to WP.29 and AC.1
- 2025-11WP.29 adoptsECE/TRANS/WP.29/1188Adopted at the 197th session (session report, para. 110)
- 2026-06-04In forceC.N.220.2026.TREATIES-XI.B.16.90UN depositary notification
Q3Who is affected
Vehicle manufacturer
- No direct action for this role.
Component supplier
- Be ready for Annex 1A item 8.3.: a description of the burnishing procedure used during the type approval tests.
Technical service / Approval authority
- Make sure item 8.3. of the Annex 1A communication form describes the burnishing procedure used during the type approval tests.
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ⓘ This report gives advice only. It is not legal or type-approval advice.