UN R33 Supplement 3 (00 series) · UNECE Regulation No. 33 (ECE R33) — Uniform provisions concerning the approval of vehicles with regard to the behaviour of the structure of the impacted vehicle in a head-on collision.
UN R33 — Supplement 3 to the 00 series of amendments
Supplement 2 → 3
- What changed
- Annex 3 no longer contains the “H” point and actual torso angle procedure; a new footnote refers to Addendum 6 of M.R.1.
- Annex 3 lists only the titles of Appendices 1 to 3; their old text and figures are deleted.
- The footnotes to paragraphs 1. and 4.4.1.1. now refer to R.E.3 Revision 7 (ECE/TRANS/WP.29/78/Rev.7).
- Why
- The specifications of the 3-D H machine were updated and moved from R.E.3 to M.R.1.
- A calibration procedure was added so that the 3-D H machine gives consistent test results among all Regulations.
- The references to R.E.3 are updated to its latest amendment, Revision 7.
Q1What changed116 changes
“H” point procedure replaced by a reference to M.R.1 (Annex 3)
Annex 3 no longer contains the procedure to find the “H” point and the actual torso angle. A new footnote says that the procedure is described in Addendum 6 of Mutual Resolution No. 1 (M.R.1), document ECE/TRANS/WP.29/1101/Amend.5. The deleted text gave the purpose, the definitions, the requirements and the measurement procedure. A deleted footnote covered seats other than front seats where the “H” point could not be determined with the 3-D H machine or procedures. For these seats, the competent authority could, at its discretion, use the manufacturer's “R” point as a reference.
Appendices 1 to 3 of Annex 3 reduced to their titles
Annex 3 now lists only the titles of Appendices 1, 2 and 3. The old text and figures of these appendices are deleted. These appendices described the 3-D H machine, the three-dimensional reference system and the reference data for seating positions. Footnotes with references to SAE, ISO Standard 6549-1980 and ISO Standard 4130, 1978 are also deleted.
Updated R.E.3 reference (footnote to para. 1.)
The footnote to paragraph 1. now refers to R.E.3, document ECE/TRANS/WP.29/78/Rev.7, para. 2. Before, it referred to Annex 7 of R.E.3, document TRANS/WP.29/78/Rev.1/Amend.2, as last amended by Amendment 4. The new text also gives the web address of the WP.29 resolutions page.
List of distinguishing numbers replaced by an R.E.3 reference (footnote to para. 4.4.1.1.)
The footnote to paragraph 4.4.1.1. no longer gives the list of country numbers, from 1 for Germany to 56 for Montenegro. It now says that the distinguishing numbers of the Contracting Parties to the 1958 Agreement are in Annex 3 to R.E.3, document ECE/TRANS/WP.29/78/Rev.7.
Q2Why it changed
- Proposed by
- Expert from the Netherlands
- Working party
- GRSP, 75th session (May 2024)
Reasons
The specifications of the 3-D H machine were updated and moved from R.E.3 to M.R.1. The aim of the proposal is to move the references to the 3-D H machine and its calibration procedure from R.E.3 to M.R.1.
Sources (2)
“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.”
“to remove the reference to the 3-D H-point machine and calibration procedure from the UN Regulations under the remit of GRSP, from Consolidated Resolution on the Construction of Vehicles (R.E.3) to Mutual Resolution No. 1 (M.R.1).”
A calibration procedure was also added. Its aim is that the 3-D H machine used for all tests in UN Regulations and UN GTRs 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.”
The references to R.E.3 are updated to its latest amendment, Revision 7.
Source
“Update to latest amendment (revision 7) of Consolidated Resolution on the Construction of Vehicles (R.E.3).”
Document trail
- 2024-03ProposalECE/TRANS/WP.29/GRSP/2024/7Collective proposal by the expert from the Netherlands
- —Amended in sessionGRSP-75-21Amendment introduced at the 75th GRSP session
- —Working party adoptsECE/TRANS/WP.29/GRSP/75Session report, para. 30
- 2024-08Sent to WP.29ECE/TRANS/WP.29/2024/130Text 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.301.2025.TREATIES-XI.B.16.33UN depositary notification
Q3Who is affected
Vehicle manufacturer
- Compare your “H” point and actual torso angle method with the procedure in Addendum 6 of M.R.1.
- Update your internal documents that quote the old text of Annex 3 or of Appendices 1 to 3.
- Update documents that copy the two changed footnotes to refer to ECE/TRANS/WP.29/78/Rev.7, para. 2 and Annex 3.
Component supplier
- No direct action for this role.
Technical service / Approval authority
- Use the procedure in Addendum 6 of M.R.1 to find the “H” point and the actual torso angle.
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ⓘ This report gives advice only. It is not legal or type-approval advice.