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WP.29/2026/108

UN R55: Proposal for a Supplement 1 to the 03 series of amendments

Source(s)

GRSG

Date

21 Apr 2026

Status

Adopted by WP.29

Subject

Impact

03 series of amendments | Supplement 1

Meeting(s)

WP.29 | Session 199 | 22-26 Jun

Agenda item 4.10.8. Proposal for Supplement 1 to the 03 series of amendments to UN Regulation No. 55 (Mechanical Couplings)

Proposal to enable application of UN R55 to vehicles of categories X and Y and vehicles with a manual mode operating at speeds above 6 km/h equipped with an Automated Driving System, insert footnote 1 defining these vehicle categories, amend Annex 5 paragraph 7.4. to require that release of fifth wheel coupling locking devices require intentional action by the driver or operator or by ADS and that engagement status be transmitted as a logic signal to ADS, amend paragraph 10.4. to require that engagement status be transmitted as a logic signal to ADS, amend paragraph 13.2. to reference remote indication for the driver or operator, amend paragraph 13.2.8. to provide for automatic reactivation when the coupling is next opened and closed, amend paragraph 13.3.3. to clarify indication to the driver or operator of conditions under which external force acts on the coupling, and insert new paragraph 13.4. requiring transmission of a logic signal to ADS indicating at least the closed and doubly locked position of the coupling.

Downloads

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Related documents

Excerpts from session reports

WP.29 | Session 199 | 22-26 Jun

64. The World Forum considered draft amendments under agenda items 4.6.1 to 4.6.26. and recommended their submission to AC.1 for voting, with the following amendments:

For ECE/TRANS/WP.29/2026/54: In the title, replace “Supplement 4” by “Supplement 5”.
For ECE/TRANS/WP.29/2026/63: Modify the amendments to paragraphs 5.8.6.1. to 5.8.6.3. to read as follows: Paragraph 5.8.6.1., replace “owner’s manual” by “user’s manual”. Paragraph 5.8.6.1.2., at the end, before the comma, add “(if applicable)”. Paragraph 5.8.6.1.3., in the second sentence, after “driver”, add “and/or ADS”.
For ECE/TRANS/WP.29/2026/65: Modify the amendment to Annex 3, paragraph 1.4.3.11.1. to read as follows: Annex 3, paragraph 1.4.3.11.1., transfer the second sentence to a new paragraph and at the end of this new paragraph, add a new sentence to read: “For vehicles of category X, the “H” point of the most forward outboard passenger’s place shall be taken instead of the H-point of the driver’s place.”.
For ECE/TRANS/WP.29/2026/71: Delete the amendment to Annex 9, paragraph 3.
Where applicable, include the modifications as laid down in WP.29-199-10 and reproduced in Annex VI.

65. The World Forum considered draft amendments under agenda items 4.7.1 to 4.7.20 and recommended their submission to AC.1 for voting with the amendments laid down in informal document WP.29-199-10 and reproduced in Annex VI, where applicable.

66. The World Forum considered draft amendments under agenda items 4.8.1 to 4.8.15 and recommended their submission to AC.1 for voting, with the amendments laid down in informal document WP.29-199-10 and reproduced in Annex VI, where applicable.

68. The World Forum considered the draft amendments under agenda items 4.10.1 to 4.10.36, as modified, where applicable, by document WP.29-199-10 and reproduced in Annex VI. It recommended their submission to AC.1 for voting.

69. The World Forum considered draft amendments under agenda items 4.11.1 and 4.11.14 and recommended their submission to AC.1 for voting with the amendments laid down in informal document WP.29-199-10 and reproduced in Annex VI, where applicable.