18. The experts from France, the Netherlands and BIPAVER proposed to align the provisions for retreaded tyres with the previously adopted proposals for UN Regulations Nos. 54 and 117 and to cover all tread materials (ECE/TRANS/WP.29/GRBP/2021/16). The expert from ETRTO commented on the proposal and suggested further modifications (GRBP-74-29-Rev.1 and GRBP-74-30-Rev.2). GRBP adopted the proposal with the amendments in Annex IV and requested the secretariat to submit it for consideration and vote at the March 2022 sessions of WP.29 and AC.1 as draft Supplement 11 to UN Regulation No. 109.

19. The expert from France tabled a proposal with the aim to allow, under certain conditions of traceability, upgrading of the service description of a used casing (ECE/TRANS/WP.29/GRBP/2021/18). GRBP adopted the proposal and requested the secretariat to submit it for consideration and vote at the March 2022 sessions of WP.29 and AC.1 as draft Supplement 11 to UN Regulation No. 109.

20. GRBP noted GRBP-74-06 and GRBP-74-34 and invited the expert from France to submit these proposals to the next session in the form of an official document.