23. The expert from Italy presented ECE/TRANS/WP.29/GRRF/2014/23 proposing new requirements for the approval of replacement brake discs for L-category vehicles, taking into consideration the latest technologies available in the market.

24. The proposal received some comments. The expert from Spain recalled the work done on this matter by the informal group on UN Regulation No. 90. GRRF requested that an overview of the differences between this proposal and the outcome of the IWG in 2009. GRRF agreed to revisit this item on the basis of this document or a revised proposal submitted by the expert from Italy taking into account all the comments received.

24. The expert from Italy presented GRRF-79-30, introducing the amendments proposed in ECE/TRANS/WP.29/GRRF/2014/23/Rev.1 as amended by GRR-79-11 and GRRF 79 13 on new requirements for the approval of replacement brake discs for L category vehicles, taking into consideration the latest technologies available in the market.

25. The proposal received some comments. GRRF agreed to revisit this item on the basis of a revised proposal to be submitted by the expert from Italy and taking into account all the comments received