39. Upon the request of WP.29 at its previous session, the secretariat presented the guidelines on amendments to UN Regulations (WP.29-163-10) with several proposals on the administrative proceedings of the secretariat under the current version and the future Revision 3 of the 1958 Agreement. WP.29 welcomed the proposal and referred the document to IWVTA and its subgroups for detailed consideration at their next meetings. WP.29 invited all interested delegates to transmit their comments to the secretariat and agreed to resume consideration on this subject at its next session on the basis of a revised document, taking into account the comments received.

40. Concluding the discussion, WP.29 requested the secretariat to participate in all forthcoming meetings of IWVTA.

24. The secretariat presented draft guidelines on amendments to UN Regulations (WP.29-163-10), including a new term “version of a UN Regulation” and a common commencement date (1 September each year) recommended for new series of amendments to all UN Regulations listed in the annex of UN Regulation No. 0. In this respect, the Chair recalled that for the 03 series of amendments to UN Regulation No. 51, the date of entry into force of phase 1 was fixed on 1 July 2016, in order to synchronize it with the entry into force of EU Regulation No. 540/2014 on the sound level of motor vehicles and of replacement silencing systems (see para. 5 above).

34. GRE recalled the draft guidelines on amendments to UN Regulations (WP.29-163-10) and a recommendation to limit the submission of a set of amendments to an existing Regulation to only one session of WP.29 per year, in order to reduce the administrative burden. GRE noted that, in the future, it could continue approving amendments to a specific Regulation at each session, but their subsequent submission to WP.29 and AC.1 would be done only once a year.