8. The expert from ISO presented revised proposals that introduced into Regulation No. 51 an option of indoor testing, according to standard ISO 362-3 (ECE/TRANS/WP.29/GRB/2018/3). This proposal received comments from the experts of China, France (GRB-67-11), Germany, Netherlands, Russian Federation (GRB-67-01), Sweden and OICA. Following an in-depth discussion, GRB adopted the proposals, as amended (Annex II of the session report), and requested the secretariat to submit them to the World Forum for Harmonization of Vehicle Regulations (WP.29) and to the Administrative Committee (AC.1) for consideration and vote at their June 2018 sessions as a draft Supplement 4 to the 03 series of amendments to Regulation No. 51.

11. The expert from ISO proposed to introduce an option of indoor testing, according to standard ISO 362-3, in Annex 3 to Regulation No. 51 (ECE/TRANS/WP.29/GRB/2017/8). This proposal received comments from the experts of France, Netherlands, Poland, Spain, Sweden and OICA. GRB decided to revert to the proposals at the next session and invited all experts to study the document and to send their questions and comments to ISO.