4. Concerning the issue of different heights of the vehicle from adjustable suspension systems, the expert from Germany requested to resume consideration on this issue (GRSP-65-17) at the May 2021 session of GRSP. GRSP agreed with the request from the expert from Germany and noted that amendment 3 would be completed at the March 2021 session of the Executive Committee of the 1998 Agreement (AC.3) with the incorporation of provisions concerning the revised headform test. Thus, GRSP noted that a possible amendment incorporating the adjustable suspension systems would be a new one following the endorsement of a new request of authorization to develop the work submitted by a Technical Sponsor.