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UN R0 Base text (08 series) · UNECE Regulation No. 0 (ECE R0) — Uniform provisions concerning the International Whole Vehicle Type Approval (IWVTA).

UN R0 — 08 series of amendments

Changes from 07 series of amendments

Adopted at the WP.29 197th sessionEntry into force 2026-06-04
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What changed
  • Annex 4 now lists a later series of amendments for UN Regulations Nos. 10, 16, 17, 34, 125, 127 and 138. Annex 4 no longer lists UN Regulation No. 44 for built-in vehicle booster cushions, and now lists No. 129 for built-in “specific vehicle booster seats”.
  • Paragraph 4.6. is now “(Reserved)”, so it no longer says that a Unique Identifier (UI) may not replace the approval mark.
  • From 1 September 2026, Contracting Parties applying this UN Regulation need not accept type approvals to an earlier series first issued after that date.
Why
  • Paragraph 4.6. is not necessary, because the UI marking can no longer be applied by default.

Q1What changed4 changes

UN Regulations listed for U-IWVTA (Annex 4, Part A, Section I)

In the Annex 4 list, UN Regulations Nos. 10, 16, 17, 34, 125, 127 and 138 now have a later series of amendments. For example, the entry for UN Regulation No. 10 changes from the 05 series to the 06 series. UN Regulation No. 44 (built-in vehicle booster cushions) is no longer in the list. UN Regulation No. 129, 04 series, is new in the list, for built-in “specific vehicle booster seats” only and not for standalone child seats. The entry for UN Regulation No. 162 (immobilizers) now has an asterisk, so it applies only if the vehicle has an immobilizer. The notes under the list now have the heading “Notes:” and changes in punctuation and wording.

Restraining devices for child occupants of power-driven vehicles (only inasmuch as it relates to built-in vehicle booster cushions but not covering standalone child seats) 44* 04 0506 0809 1011 0304 0203 0304 Enhanced Child Restraint Systems used on board of motor vehicles (only in as much as it relates to built-in "specific vehicle booster seats" but not covering standalone child seats) 129* 04 0102 162* Notes: 1. If a UN Regulation number is followed by an asterisk "*" this indicates that the respective requirement applies only if the corresponding system is fitted to the vehicle. This then means that for the purpose of a U-IWVTA both vehicles with or without this system are acceptable. However, where the system is fitted to the vehicle, the requirement applies. The same also applies to systems not identified by * "*" where it can be demonstrated that the corresponding requirements are not applicable to the IWVTA type. 2. The entry is understood as the required minimum, i.e. including all supplements in force at the time the approval is issued. Approvals to any later versions have to be equally accepted in accordance with paragraph 13.3. of this Regulation. 3. All component lamp/signalling approvals are required under UN Regulation No. 48, therefore these approvals are not mentioned under UN Regulation No. 0. 4. The series of amendments indicated in Annex 4 is without prejudice to the transitional provisions in the respective series of UN Regulations. (See UN R0 paragraph Regulation No. 0, para. 12.2, and 13.1)).

Approval mark and Unique Identifier (para. 4.6.)

Paragraph 4.6. is now “(Reserved)”. Before, paragraph 4.6. did not allow a Unique Identifier (UI), as referred to in Schedule 5 of the 1958 Agreement, to replace the approval mark.

The approval mark prescribed in paragraph 4.5. above may not be replaced by a Unique Identifier (UI) as referred to in Schedule 5 of the 1958 Agreement.(Reserved)

Acceptance of the 08 series and of earlier series (paras. 12.13. and 12.14.)

From the entry into force of the 08 series, Contracting Parties applying this Regulation must not refuse to grant or accept 08 series IWVTAs. From 1 September 2026, Contracting Parties applying this UN Regulation need not accept type approvals to an earlier series first issued after that date.

As from the official date of entry into force of the 08 series of amendments, no Contracting Party applying this UN Regulation shall refuse to grant or refuse to accept an IWVTA issued pursuant to this UN Regulation as amended by the 08 series of amendments.
As from 1 September 2026, Contracting Parties applying this UN Regulation shall not be obliged to accept type approvals to any of the preceding series of amendments, first issued after 1 September 2026.
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Q2Why it changed

Proposed by
Informal Working Group on the International Whole Vehicle Type Approval
Working party
WP.29, 196th session (June 2025)

Reasons

Reasons given by the proposer: Informal Working Group on the International Whole Vehicle Type Approval, in informal document WP.29-196-22. WP.29 considered a text based on WP.29-196-22 at its 196th session (ECE/TRANS/WP.29/1186, para. 59).

  • Paragraph 4.6. is not necessary, because the UI marking can no longer be applied by default. The proposer refers to ECE/TRANS/WP.29/2025/17, an amendment to Schedule 5 of the 1958 Agreement.

    Sources (2)
    “Paragraph 4.6. is not necessary because the UI marking cannot be applied any more by default.”
    WP.29-196-22Justification for the amending Paragraph 4.6., para. 1
    “Refer to ECE/TRANS/WP.29/2025/17 “An amendment to Schedule 5 of the 1958 Agreement””
    WP.29-196-22Justification for the amending Paragraph 4.6., para. 1

Document trail

  1. —ProposalWP.29-196-22Draft proposal for the 196th WP.29 session
  2. 2025-09Sent to WP.29ECE/TRANS/WP.29/2025/159Text submitted to WP.29 and AC.1 for consideration and vote
  3. 2025-11WP.29 adoptsECE/TRANS/WP.29/1188Adopted at the 197th session (session report, para. 110)
  4. 2026-06-04In forceC.N.193.2026.TREATIES-XI.B.16.0UN depositary notification

Q3Who is affected

Vehicle manufacturer

  • Compare the approvals of each IWVTA type with the new series of amendments in Annex 4, Part A, Section I.
  • For a U-IWVTA with built-in “specific vehicle booster seats”, get approvals to UN Regulation No. 129, 04 series or later.
  • For IWVTA approvals first issued after 1 September 2026, apply for the 08 series of amendments.
  • Update the documents that quote paragraph 4.6. or the Annex 4 list.

Component supplier

  • Give vehicle manufacturers approvals to the new series in Annex 4, for example UN Regulation No. 16, 09 series.
  • For built-in “specific vehicle booster seats”, give vehicle manufacturers approvals to UN Regulation No. 129, 04 series.

Technical service / Approval authority

  • Use the new list in Annex 4, Part A, Section I for each U-IWVTA to the 08 series.
  • Apply UN Regulation No. 162 only if the vehicle has an immobilizer, as its new asterisk shows.
  • Be ready to handle IWVTA applications to the 08 series from its official date of entry into force.
  • Update any checklist item for paragraph 4.6., because the paragraph is now “(Reserved)”.

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ⓘ This report gives advice only. It is not legal or type-approval advice.

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