33. In connection with the activities of IWG Tyre GTR, the expert from United States of America presented the outcome of the North American all-season tyre pre-meeting (GRB-68-17). The expert of ETRTO briefly introduced proposals for amendments to UN GTR No. 16 which would be presented in detail at the next session of GRB (GRB-68-18). The expert of ETRTO reported on developing a harmonized high speed test based on the two such tests listed in UN GTR No. 16, namely the one based on UN Regulation No. 30 and the other one based on the American Federal Motor Vehicle Safety Standard (FMVSS) No. 139 (GRB-68-24).