29. The expert from Finland reported on the progress of the Task Force on Studded Tyres (TF ST) (GRBP-74-15) and introduced updated Guidelines for TF ST (GRBP-74-17). GRBP adopted these Guidelines.

30. The expert from Finland presented a revised proposal for a new UN Regulation on studded tyres that had been prepared by TF ST (ECE/TRANS/WP.29/GRBP/2021/5/Rev.1). The expert from ETRTO suggested several modifications to the proposal (GRBP-74-32). GRBP adopted ECE/TRANS/WP.29/GRBP/2021/5/Rev.1 as amended by GRBP-74-32 and requested the secretariat to submit it for consideration and vote at the March 2022 sessions of WP.29 and AC.1 as a new draft UN Regulation.

31. GRBP noted that, as a next step, TF ST would elaborate a proposal to introduce an ice grip symbol for tyres of class C1 (GRBP-74-16).