Proposal to clarify the definition of a “variant” in order to avoid unintended interpretations of the certification requirements that could result in additional financial and administrative costs. As currently worded the approval of a Test Group requires individual certification for each part contained within the Test Group. Some Test Groups can contain in the region of 30 part numbers. This would align the practice for brake discs and drums with that for brake linings.

Revised proposal by Italy to introduce requirements for the approval of replacement brake discs for L-category (motorcycle and related) vehicles pursuant to comments received at the September 2014 GRRF session.