UN R90 Supplement 6 (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 6 to the 02 series of amendments
Supplement 5 → 6
- What changed
- Each approved replacement part must now be assigned an approval code and an approval number (para. 4.2.). The approval number is in the format according to Schedule 4 to the Revision 3 of the 1958 Agreement.
- The approval mark and the marking of approved brake discs/drums now show the approval code instead of the approval number (paras. 4.5.2. and 6.2.2.2.).
- Under paragraph 4.8., a Unique Identifier (UI) described in Schedule 5 to the 1958 Agreement may not replace the approval markings required by this Regulation.
- Why
- The aim is to align the provisions on approval numbers and markings with Schedule 4 to the Revision 3 of the 1958 Agreement.
- To distinguish between the two approval numbers, the current approval number is renamed the "approval code".
- The same product gets two approval numbers of different format, so a Unique Identifier (UI) may not replace the approval mark, to avoid confusion.
Q1What changed35 changes
Approval code and approval number (paras. 2.1.4., 2.1.5. and 4.2.)
Each approved replacement part must now be assigned an approval code and an approval number (para. 4.2.). The approval number is assigned to an approval code, in the format according to Schedule 4 to the Revision 3 of the 1958 Agreement. The approval code must comprise four groups of digits; before, the approval number comprised them. Paragraph 2.1.4. defines "Approval code" as a series of digits assigned by a Contracting Party to a product in the format according to paragraph 4.2. It is assigned as a result of the approval process stipulated in this Regulation, and is used as an approval mark on the product. Under paragraph 2.1.5., the approval number is displayed neither on the product, nor on labelling attached to the product or its packaging.
Same approval code and approval number (paras. 4.2.4. and 4.3.)
The same Contracting Party may not assign the same approval code and/or the same approval number to a replacement part of the different grade/type. Before, paragraph 4.3. said that the same Contracting Party may not assign the same number to another replacement part. The same type approval number and approval code may cover the use of that replacement part on a number of differing vehicle types. Paragraph 4.2.4. covers brake lining assemblies for vehicles of Category L that belong to the same group defined according to the criteria of Annex 7a. They must be assigned the same approval code and approval number as the representative brake lining assembly. Before, paragraph 4.2.4. named the approval number but not the approval code.
Brake lining compound identification number (paras. 2.3.14. and 4.2.3.)
New paragraph 2.3.14. says that the "Brake lining compound identification number" defines the specific chemical composition of a replacement brake lining and brake lining assembly. For the next series of digits, paragraph 4.2.3. now says "brake lining compound identification number of the brake lining" instead of "type of the brake lining". The adopted text also replaces a figure, which says the digital series indicates "(manufacturer and) the brake lining compound identification number /type of the replacement part".
Approval mark and marking (paras. 4.5.2., 4.5.3., 4.8. and 6.2.2.2.)
The approval mark (para. 4.5.2.) and the marking of every approved brake disc/drum (para. 6.2.2.2.) now give the approval code instead of the approval number. In the approval mark, the approval code is to the right of the circle prescribed in paragraph 4.5.1. New paragraph 4.5.3. is for small parts for vehicles of Category L1, L2, L3, L4 and L5. There, if the code cannot be marked on one line with a = 8 mm (Annex 2), part of it may go on the second line. That part of the approval code starts from the series of digits prescribed in paragraph 4.2.3. Under paragraph 4.8., a Unique Identifier (UI) described in Schedule 5 to the 1958 Agreement may not replace the approval markings required by this Regulation.
Maximum values for discs (para. 5.3.4.1.1.) and equivalent brake discs (para. 2.3.3.4.1.)
In the table of maximum values for discs, the column for M1, N1, O1, O2 now also covers L6 and L7. A new column gives values for L1, L2, L3, L4, L5, for example 0.020 mm thickness variation and 1.6 µm friction surface roughness. For these categories, note **** says that the cheek thickness variation is n/a. Their lateral run-out friction surface value is 0.150 mm, with note ***. Note *** gives 0.100 mm for maximum straightness for "full floating" disc (without elastic constraints between bell and braking ring). The definition of "Equivalent brake discs for Categories M, N and O" now adds "tolerances" to the features identical to the original brake disc.
Communication forms (Annexes 1A and 1B)
The communication forms in Annexes 1A and 1B now have a new "Approval Code" field. The "Extension No" field is removed from both forms. Two new footnotes in each form refer to paragraph 4.2. of this Regulation and to Schedule 4 to the 1958 Agreement. The forms now say "pursuant to UN Regulation No. 90" instead of "pursuant to Regulation No. 90".
Transitional provisions (paras. 12.4., 12.5. and 12.6.)
Paragraph 12.4. applies from the official date of entry into force of this supplement. From then, no Contracting Party applying this Regulation may refuse to grant or refuse to accept UN type-approvals according to this supplement. Until 1 March 2021, Contracting Parties applying this Regulation can continue to grant 02 series UN type-approvals without the provisions of this supplement (para. 12.5.). Contracting Parties applying this Regulation can continue to extend existing 02 series UN type-approvals without the provisions of this supplement (para. 12.6.).
Q2Why it changed
- Proposed by
- Expert from Russian Federation
- Working party
- GRVA, 4th session (September 2019)
Reasons
The aim is to align the provisions on approval numbers and markings with Schedule 4 to the Revision 3 of the 1958 Agreement. This addresses the concern raised by the IWG on WVTA at the 175th WP.29 session. It was proposed to match the current approval number with another approval number that has the structure stipulated in Schedule 4. To distinguish between the two approval numbers, the current one is renamed the "approval code".
Sources (4)
“addressing the concern raised by the Informal Working Group on the International Whole Vehicle Type Approval (IWG on WVTA) at the 175th WP.29 session”
“In order to align the provisions of UN Regulation No. 90 related to approval numbers and markings in line with the provisions of Schedule 4 to the Revision 3 of the 1958 Agreement,”
“it is proposed to match the approval number that is granted in accordance with the current provisions of UN Regulation No. 90 with the other approval number having the structure stipulated in Schedule 4”
“To distinct between the two approval numbers, the current one is renamed to the «approval code».”
Both numbers should be unique, so that no repetition or inconsistency with approval numbering could be foreseen. The definitions are added to make clear that an approval code is granted as a result of the approval process of this Regulation. They also make clear that an approval number is assigned to the specific approval code.
Sources (3)
“The both numbers should be unique, so no repetition or inconsistency with approval numbering could be foreseen.”
“The definitions for the terms «approval code» and «approval number» are added to ensure understanding that an approval code is granted as a result of the approval process pursuant to UN Regulation No. 90”
“and an approval number is assigned to the specific approval code.”
In the communication forms (Annexes 1A and 1B), the approval code (former approval number) stays in the same place. This keeps the current outlook of the form known by authorities. The approval number is on the same line on the right side of the page, in the position of the former extension number. This is because the extension number is now included in the format of the approval number according to Schedule 4. The new footnotes 3 and 4 are added for the sake of clarity.
Sources (4)
“In the communication forms (Annexes 1A and 1B) approval code (former approval number) is positioned on the same place to keep the current outlook of the communication form known by authorities”
“the approval number is positioned on the same line on the right side of the page substituting the position for the former extension number,”
“as this number now is included in the format of the approval number according to Schedule 4 to the 1958 Agreement.”
“The new footnotes 3 and 4 in each Annex 1A and 1B are added for the sake of clarity.”
The word "type" is used frequently in this Regulation, but with different meanings. It is defined only in the context of a brake disc/drum in paragraph 2.3.6. Therefore, for replacement brake linings, the wording "Brake lining compound identification number" is introduced and defined (para. 2.3.14.).
Sources (2)
“The word “type” is used frequently in this Regulation but with different meanings and is defined only in the context of a brake disc/drum in paragraph 2.3.6.”
“For the context of replacement brake linings, the wording “Brake lining compound identification number” has therefore been introduced and defined (para. 2.3.14.).”
The new approach gives two approval numbers of different format to the same product. To avoid confusion, the approval mark may not be replaced by a Unique Identifier (UI) described in Schedule 5 to the 1958 Agreement. GRVA agreed that the Unique Identifier should not be used as an alternative to the marking provisions in the Regulation.
Sources (3)
“Since the proposed approach involves two approval numbers of different format allocated to the same product, in order to avoid confusion,”
“by a Unique Identifier (UI) described in Schedule 5 to the 1958 Agreement is not permitted in this UN Regulation.”
“GRVA agreed that the Unique Identifier should not be used as an alternative to the marking provisions in the Regulation.”
Document trail
- 2019-07ProposalECE/TRANS/WP.29/GRVA/2019/25Proposal by the expert from Russian Federation
- —Working party adoptsECE/TRANS/WP.29/GRVA/4Session report, para. 66
- 2019-12Sent to WP.29ECE/TRANS/WP.29/2020/8Text that GRVA sent to WP.29 and AC.1
- 2020-03WP.29 adoptsECE/TRANS/WP.29/1151Adopted at the 180th session (session report, para. 126)
- 2020-09-25In forceC.N.485.2020.TREATIES-XI.B.16.90UN depositary notification
Q3Who is affected
Vehicle manufacturer
- No direct action for this role.
Component supplier
- Make sure the approval mark shows the approval code to the right of the circle (para. 4.5.2.).
- Make sure each approved brake disc/drum is durably marked with the approval code (para. 6.2.2.2.).
- Do not replace the approval markings with a Unique Identifier (UI) described in Schedule 5 (para. 4.8.).
- Make sure discs of categories L1 to L5 meet the maximum values in the new table column (para. 5.3.4.1.1.).
- Make sure discs of categories L6 and L7 meet the values of the M1, N1, O1, O2 column (para. 5.3.4.1.1.).
Technical service / Approval authority
- Check that each approved replacement part has an approval code and an approval number (para. 4.2.).
- Check that the communication forms of Annexes 1A and 1B give the approval code and the approval number.
- Test discs of categories L1 to L5 against the values in the new table column (para. 5.3.4.1.1.).
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ⓘ This report gives advice only. It is not legal or type-approval advice.