57. The secretariat presented a proposal for amendments to UN Regulation No. 55 (GRSG-121-42). The secretariat informed GRSG that the respective proposal for a Corrigendum to Revision 2 of UN Regulation No. 55 (ECE/TRANS/WP.29/2019/21), adopted at the 177th session of WP.29, had not been notified by the UN Office of Legal Affairs (OLA) because it was interpreted by OLA as a duplication of what was already covered by ECE/TRANS/WP.29/2015/7. Furthermore, OLA reaffirmed that Revisions of UN Regulations are not considered as authentic treaty texts and therefore corrigenda to Revisions would not be notified by OLA and should be related to authentic texts only. Therefore, the secretariat explained, it was necessary to put forth the proposal contained in document GRSG-121-42, in order to amend UN Regulation No. 55 as proposed and adopted by WP.29 within document ECE/TRANS/WP.29/2019/21.

58. GRSG considered document GRSG-121-42, proposal for Supplement 10 to the 01 series and 02 to the 02 series of amendments to UN Regulation No. 55, and requested the secretariat to submit it as an official document to WP.29 and AC.1 for consideration and vote at its November 2021 sessions, with prior reconfirmation at the October 2021 session of GRSG.

57. The secretariat introduced official documents ECE/TRANS/WP.29/GRSG/2021/22 a Proposal for Supplement 10 to 01 series of amendments and a Proposal for Supplement 2 to 02 series of amendments to UN Regulation No. 55 which has been submitted for consideration in 185th November 2021 session of WP.29. The secretariat also introduced official documents ECE/TRANS/WP.29/GRSG/2021/22 a proposal for Supplement 10 to 01 series of amendments and Supplement 2 to 02 series to UN Regulation No. 55 and ECE/TRANS/WP.29/GRSG/2021/21 a proposal for Corrigendum 2 for the 01 series of amendments and Corrigendum 1 for the 02 series of amendments to UN Regulation No. 55. The secretariat recalled that ECE/TRANS/WP.29/GRSG/2021/21 was based on informal document GRSG-121-06 and ECE/TRANS/WP.29/GRSG/2021/22 was based on informal document GRSG-121-42 and these documents have not been further processed by the Treaty Section of the Office of Legal Affairs in New York.

58. GRSG considered and endorsed official documents ECE/TRANS/WP.29/2021/105 and ECE/TRANS/WP.29/2021/153 for voting at the November 2021 sessions of WP.29 and AC.1. GRSG also considered and adopted official documents ECE/TRANS/WP.29/GRSG/2021/21 and ECE/TRANS/WP.29/GRSG/2021/22 for submission and vote at the March 2022 sessions of WP.29 and AC.1.