8. GRSG noted that the Executive Committee of the 1998 Agreement (AC.3) at its March 2024 session had adopted the authorization (ECE/TRANS/WP.29/2024/32) to develop amendments to UN GTRs Nos. 6, 7 (Head Restraints) and 14 (Pole side impact) which would allow the transfer of the reference, drawings and specification on the three-dimensional H- (3-D H-) point machine and calibration procedure from the UN GTRs to Mutual Resolution No. 1 (M.R.1). The expert from the Netherlands, which sponsors the amendment, introduced ECE/TRANS/WP.29/GRSG/2024/20 amending the UN GTR. Finally GRSG recommended ECE/TRANS/WP.29/GRSG/2024/20, not amended, as Amendment 4 to UN Regulation No. 6 to the November 2024 session of AC.3.

42. The expert from the Netherlands, Chair of TF on three dimensional “H” (3-D "H) point machine, informed GRSG that TF (with the participation of experts of GRSP) had prepared a new addendum (GRSG-126-20) to the Mutual Resolution No. 1 to be discussed at the December 2023 session of GRSP. He explained that the proposal included specifications and the calibration procedure of the 3-D “H”-point machine, the procedure for determining the point “H”, and the actual torso angle for seating positions in motor vehicles which would be used in all referenced UN Regulations and GTRs. GRSG agreed that TF would prepare amendments proposals for the March 2024 session of GRSG to UN Regulations Nos. 35, 43, 46, 125, 166 and 167 and UN GTR No. 6 in the remit of GRSG which would move the references from R.E.3 and from the text of the UN GTR No. 6 to M.R.1. It was also agreed that the authorization to develop the amendments to UN GTRs Nos. 6, 7 and 14 would be coordinated with GRSP would be submitted at the March 2024 session of the Executive Committee of the 1998 Agreement (AC.3). Th aim was to have a complete set of amendments to UN Regulations, UN GTRs and M.R.1 at the November 2024 sessions of WP.29, AC.1 and AC.3.