32. The Chair reported on the outcome of the informal meeting in Brussels on 31 October 2018 and introduced a revised document on priorities of the future work (GRB-69-03) with topics related to sound emission and tyre requirements. The document covered essentially the limit values for phase 3, ASEP, uncertainties, track alignment and measurement discrepancies, provisions for the so-called three peak mountain snow flake (3PMSF) winter tyres, wet grip test method for C1 tyres, wet grip for worn tyres, etc. The experts from China, Germany, Netherlands, EC, ETRTO and OICA commented on the proposal. The Chair indicated his intention to convene a meeting to develop a roadmap for level 1 priorities, as marked in GRB-69-03.

33. The expert of OICA briefed GRB about a forthcoming study with the aim to find out if lowering the rolling sound limits would affect other tyre parameters essential for vehicle safety and CO2 reduction (GRB-69-25-Rev.1). GRB took note of this information and invited OICA to report the outcome of the study at the next session.