151. The Chair of AC.3 introduced the documents that were considered under this agenda item. AC.3 considered ECE/TRANS/WP.29/2019/31/Rev.1, aimed at providing an updated overview of the priorities of the Programme of Work of the development of UN GTRs or amendments to the existing ones taking into account the decisions on document ECE/TRANS/WP.29/2019/2 from the 177th WP.29 session (ECE/TRANS/WP.29/1145, para. 49). AC.3 referred to the discussions on WP.29-178-10/Rev.2, WP.29-178-19, WP.29-178-16/Rev.1, WP.29-178-17/Rev.2 and WP.29-178-18/Rev.1 under agenda item 2.3. Please note that document WP.29-178-17/Rev.2 does not exist. The amended document WP.29-178-17/Rev.1 was reproduced in Annex VI of the session report.