Uniform provisions concerning the approval of mechanical coupling components of combinations of vehicles
| 186th WP.29 session (7-11 Mar): With 33 of the 46 Contracting Parties applying UN R55 present and voting, AC.1 adopted document WP.29/2022/40 by a vote of 33 in favor, 0 opposed, with 0 abstaining. |
| 186th WP.29 session (7-11 Mar): With 33 of the 46 Contracting Parties applying UN R55 present and voting, AC.1 adopted document WP.29/2022/39 by a vote of 33 in favor, 0 opposed, with 0 abstaining. |
| 185th WP.29 session (23-26 Nov 2021): With 34 of the 46 Contracting Parties applying UN R55 present and voting, AC.1 adopted document WP.29/2021/153 by a vote of 34 in favor, 0 opposed, with 0 abstaining. |
| 185th WP.29 session (23-26 Nov 2021): With 34 of the 46 Contracting Parties applying UN R55 present and voting, AC.1 adopted document WP.29/2021/105 by a vote of 34 in favor, 0 opposed, with 0 abstaining. |