UN R55 Supplement 9 (01 series) · UNECE Regulation No. 55 (ECE R55) — Uniform provisions concerning the approval of mechanical coupling components of combinations of vehicles.
UN R55 — Supplement 9 to the 01 series of amendments
Supplement 8 → 9
- What changed
- Annex 5, paragraph 3.4. now says: “Any flexible components providing part of the articulation are not considered to be a special joint.”
- Why
- When flexible components provide part of the articulation, the earlier wording left room for interpretation.
- Approval documents of C50 couplings on the market show no Annex 7, paragraph 1.3.8. restriction when flexible components provide part of the articulation.
- Apparently, the earlier wording has been widely interpreted in the same way as this clarified proposal.
Q1What changed1 change
Flexible components in the articulation and special joints (Annex 5, para. 3.4.)
Annex 5, paragraph 3.4. covers the case where part of the articulation is provided by a special joint (Class C50-X drawbar couplings only). In that case, the field of application in the Annex 1 communication form must be restricted to the cases stated in Annex 7, paragraph 1.3.8. A new sentence in Annex 5, paragraph 3.4. says: “Any flexible components providing part of the articulation are not considered to be a special joint.”
Q2Why it changed
- Proposed by
- Expert from Finland
- Working party
- GRSG, 118th session (July 2020)
Reasons
When flexible components provide part of the articulation, the earlier wording left room for interpretation.
Source
“In case part of the articulation is provided by flexible components the current wording leaves room for interpretation.”
Approval documents of C50 couplings on the market show no Annex 7, paragraph 1.3.8. restriction when flexible components provide part of the articulation.
Source
“Approval documentation of the C50 coupling devices on the market show the use restriction according to Annex 7, paragraph 1.3.8. has not been used in case of flexible components providing part of the articulation.”
Apparently, the earlier wording has been widely interpreted in the same way as this clarified proposal.
Source
“Apparently, at the moment current wording has been widely interpreted according to this clarified proposal.”
Document trail
- —ProposalGRSG-117-06Informal proposal by the expert from Finland for the 117th GRSG session
- 2020-01ProposalECE/TRANS/WP.29/GRSG/2020/8Proposal by the expert from Finland
- —Working party adoptsECE/TRANS/WP.29/GRSG/97GRSG session report, para. 29
- 2020-09Sent to WP.29ECE/TRANS/WP.29/2020/132Text that GRSG sent to WP.29 and AC.1
- 2020-11WP.29 adoptsECE/TRANS/WP.29/1155Adopted at the 182nd session (session report, para. 133)
- 2021-06-09In forceC.N.186.2021.TREATIES-XI.B.16.55UN depositary notification
Q3Who is affected
Vehicle manufacturer
- No direct action for this role.
Component supplier
- No direct action for this role.
Technical service / Approval authority
- No direct action for this role.
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ⓘ This report gives advice only. It is not legal or type-approval advice.