49. The expert from Italy presented GRSP-74-04-Rev.1 that introduces an alternative speaker simulator for helmet testing. GRSP adopted (GRSP-74-04-Rev.1) as reproduced in annex IX to the session report and requested the secretariat to submit it as draft Supplement 3 to the 06 series of amendments to UN Regulation No. 22 to WP.29 and AC.1 session for consideration and vote at their June 2024 sessions.