58. The Chairman of GRBP reported on the results of the seventy-fifth session of GRBP (for details, see the report in ECE/TRANS/WP.29/GRBP/73).

59. In particular, he mentioned that GRBP had adopted a draft new UN Regulation on reverse warning which would apply to:

1. Approval of audible reverse warning devices which are intended for fitting to motor vehicles of categories M2 (M > 3500 kg), N2, N3 and M3;
2. Approval of such motor vehicles with regard to fitting of audible reverse warning devices automatically activated when reverse gear is selected and the propulsion system is on.

60. He requested WP.29 and AC.1 to postpone to the June 2022 session consideration of amendments in ECE/TRANS/WP.29/2022/4 and ECE/TRANS/WP.29/2022/11 (agenda items 4.6.2 and 4.6.9, respectively) for the sake of being combined with further amendments to the same UN Regulations Nos. 51 and 117 that had been adopted at the seventy-fifth session of GRBP. WP.29 concurred with this request.

61. The GRBP Chair also requested WP.29 to extend the mandates of the two IWGs on Measurement Uncertainties (MU) and on Wet Grip Performance for Tyres in a Worn State until September 2023 and January 2024, respectively.WP.29 gave its consent.

62. He pointed out that, based on the outcome of the IWG MU work, GRBP had endorsed a general approach how to handle measurement uncertainties which could apply not only to UN Regulations under GRBP, but also to all other UN Regulations. To acquaint all WP.29 experts with the concept, he suggested that IWG MU deliver a presentation at one of WP.29 meetings. WP.29 supported this initiative.

63. Finally, he informed WP.29 that GRBP, in close cooperation with GRPE, had established a Task Force on tyres’ abrasion under the Co-Chairmanship of France and the European Commission.