33. The expert from France proposed an amendment to UN Regulation No. 28 which complemented paragraph 2 “Definition” with an “electronic” operation of the audible warning device (ECE/TRANS/WP.29/GRBP/2019/26). GRBP adopted the proposal and requested the secretariat to submit it to WP.29 and AC.1 for consideration and vote at their March 2020 sessions as a draft Supplement 6 to the original series of amendments to UN Regulation No. 28.