UN R80 Supplement 1 (04 series) · UNECE Regulation No. 80 (ECE R80) — Uniform provisions concerning the approval of seats of large passenger vehicles and of these vehicles with regard to the strength of the seats and their anchorages.

UN R80 — Supplement 1 to the 04 series of amendments

Base text → Supplement 1

Adopted at the WP.29 194th sessionEntry into force 2025-06-12

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What changed: Footnote 1 of Annex 4 now refers to Addendum 6 of Mutual Resolution No. 1 (M.R.1) for the “H” point procedure.
This supplement deletes footnote 2 of Annex 4. It referred to the Society of Automotive Engineers (SAE) for details of the construction of the 3 DH machine.
In footnote 1 to paragraph 1.1. and footnote 3 to paragraph 4.5.1., the R.E.3 document is now ECE/TRANS/WP.29/78/Rev.7.
Why: The specifications of the 3-D “H” point machine were updated and moved from R.E.3 to M.R.1.
A calibration procedure was added, so that the machine gives consistent test results among all Regulations.
The proposal updates references to the latest amendment (Revision 7) of R.E.3.

Q1What changed6 changes

Reference for the “H” point procedure (Annex 4, footnote 1)

Footnote 1 of Annex 4 now says that Addendum 6 of Mutual Resolution No. 1 (M.R.1), document ECE/TRANS/WP.29/1101/Amend.5, describes the procedure. Before this supplement, the footnote referred to Annex 1 to the Consolidated Resolution on the Construction of Vehicles (RE.3), document ECE/TRANS/WP.29/78/Rev.2. The footnote now gives the web address https://unece.org/transport/vehicle-regulations/wp29/resolutions. The definition of “Reference plane” refers to the prescriptions of Annex 4 for the determination of the H point.

The procedure is described in Annex 1 to the Consolidated Resolution on the Construction of Vehicles (RE.3) (document ECE/TRANS/WP.29/78/Rev.2). www.unece.org/trans/main/wp29/wp29wgs/wp29gen/wp29resolutions.htmlThe procedure is described in Addendum 6 of Mutual Resolution No. 1 (M.R.1) (document ECE/TRANS/WP.29/1101/Amend.5); see https://unece.org/transport/vehicle-regulations/wp29/resolutions

Deleted footnote 2 of Annex 4 (SAE and ISO references for the 3 DH machine)

This supplement deletes footnote 2 of Annex 4. It referred to the Society of Automotive Engineers (SAE) for details of the construction of the 3 DH machine. It also said that the machine corresponds to that described in ISO Standard 6549-1980.

For details of the construction of the 3 DH machine refer to Society of Automotive Engineers (SAE), 400 Commonwealth Drive, Warrendale, Pennsylvania 15096, United States of America. The machine corresponds to that described in ISO Standard 6549‑1980.

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References to R.E.3 Revision 7 (footnotes to paras. 1.1. and 4.5.1.)

Footnote 1 to paragraph 1.1. refers to paragraph 2 of R.E.3. The document is now ECE/TRANS/WP.29/78/Rev.7 instead of ECE/TRANS/WP.29/78/Rev.2. Footnote 3 to paragraph 4.5.1. refers to Annex 3 to R.E.3 for the distinguishing numbers of the Contracting Parties to the 1958 Agreement. The document is now ECE/TRANS/WP.29/78/Rev.7 instead of TRANS/WP.29/78/Rev.2/Amend.1. Both footnotes now give the web address https://unece.org/transport/vehicle-regulations/wp29/resolutions.

As defined in the Consolidated Resolution on the Construction of Vehicles (R.E.3.), document ECE/TRANS/WP.29/78/Rev.2ECE/TRANS/WP.29/78/Rev.7, para. 2 - https://unece.org/transport/vehicle-regulations/wp29/resolutions

The distinguish distinguishing numbers of the Contracting Parties to the 1958 Agreement are reproduced in Annex 3 to the Consolidated Resolution on the Construction of Vehicles (R.E.3), document TRANS/WP.29/78/Rev.2/Amend.1.ECE/TRANS/WP.29/78/Rev.7, Annex 3 - https://unece.org/transport/vehicle-regulations/wp29/resolutions

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Q2Why it changed

Proposed by: Expert from the Netherlands
Working party: GRSP, 75th session (May 2024)

Reasons

The specifications of the three-dimensional “H” point machine were updated and moved from R.E.3 to M.R.1.
Source
“The specifications of the three-dimensional "H" (3-D "H")-point machine have been updated and transferred from R.E.3. to M.R.1.”
ECE/TRANS/WP.29/GRSP/2024/7II. Justification, para. 2
A calibration procedure was also added. It makes sure that the machine used for all testing in UN Regulations and UN Global Technical Regulations is consistent and gives consistent test results.
Source
“Also, a calibration procedure was added, assuring that the 3-D "H"-point machine used for all testing in UN Regulations and UN Global Technical Regulations is consistent and gives consistent test results among all Regulations.”
ECE/TRANS/WP.29/GRSP/2024/7II. Justification, para. 2
The proposal updates references to the latest amendment (Revision 7) of R.E.3.
Source
“Update to latest amendment (revision 7) of Consolidated Resolution on the Construction of Vehicles (R.E.3).”
ECE/TRANS/WP.29/GRSP/2024/7II. Justification, para. 1

Document trail

2024-03ProposalECE/TRANS/WP.29/GRSP/2024/7Collective proposal by the expert from the Netherlands, including UN Regulation No. 80
—Amended in sessionGRSP-75-21Amendment to the proposal at the 75th GRSP session
—Working party adoptsECE/TRANS/WP.29/GRSP/75Session report, para. 30
2024-08Sent to WP.29ECE/TRANS/WP.29/2024/131Text that GRSP sent to WP.29 and AC.1
2024-11WP.29 adoptsECE/TRANS/WP.29/1181Adopted at the 194th session (session report, para. 158)
2025-06-12In forceC.N.305.2025.TREATIES-XI.B.16.80UN depositary notification

Q3Who is affected

Vehicle manufacturer

Update your documents that refer to Annex 1 of R.E.3 for the “H” point procedure.
Update your documents that quote the deleted footnote on the 3 DH machine.
Where your documents copy the footnotes that cite R.E.3 paragraph 2 or R.E.3 Annex 3, change the document to ECE/TRANS/WP.29/78/Rev.7.

Component supplier

If you measure the “H” point with your own 3-D H machine, compare it with the updated specifications in M.R.1.

Technical service / Approval authority

Note that the footnote on the “H” point procedure now refers to Addendum 6 of M.R.1.
Update test report templates that refer to Annex 1 of R.E.3 for the “H” point procedure.
Check distinguishing numbers in approval marks against Annex 3 to R.E.3 in document ECE/TRANS/WP.29/78/Rev.7.

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