58. The Chair of GRSP introduced informal document WP.29-199-11, asking WP.29 for guidance on an apparent contradiction between transitional provisions in the 06 series of amendments to UN Regulation No. 22 on helmets and Revision 3 of the 1958 Agreement. The Chair of WP.29 clarified that this kind of contradiction could also be present in other UN Regulations. The representative of Japan proposed that this matter be discussed at the IWG on IWVTA. The representative from Spain noted that the 06 series of amendments was adopted after Revision 3 of the 1958 Agreement and argued that article 12.4 was included in the 1958 Agreement to avoid having to modify multiple existing UN Regulations individually, but that it was not clear if it was meant to constrain future UN Regulations. The expert from France highlighted that helmets were a very particular case and wondered whether this had been taken into account when drafting the provisions of the 1958 Agreement. The expert from OICA wondered whether transitional provision 15.1.3. was outside the scope of the 1958 Agreement and supported the proposal to discuss this in IWG IWVTA. The expert from the EC asked for more time to consider the matter before offering guidance and proposed that the issue be discussed again in the November 2026 session of WP.29. A member of the secretariat stated that in his opinion, in case of contradiction, the provisions of the 1958 Agreement should prevail over those of specific UN Regulations and that some of the transitional provisions in UN Regulation No. 22 were outside the scope of the 1958 Agreement. He encouraged GRSP to redraft the transitional provisions to fully align with the official guidelines on transitional provisions. WP.29 agreed to request IWG IWVTA to discuss this item and report back to WP.29 in its November 2026 session.