118. The representative of Germany introduced the first progress report of the informal working group (WP.29-156-11) on UN GTR No. 9 Phase 2, focusing on incorporating the flexible legform impactor (Flex-PLI). He informed AC.3 that the group was chaired by Germany, vice-chaired by Japan and that the secretariat tasks were performed by OICA. He reported that the first meeting of the informal working group was held in Geneva prior to the December 2011 session of GRSP and that the next meetings were scheduled on 28-29 March 2012 (Osaka, Japan) and on 29-30 May 2012 (Paris). The representative of United States of America reported that NHTSA was continuing the validation process of the Flex-PLI.

119. AC.3 endorsed, in principle, the terms of reference of the informal working group (see para. 32) and requested the secretariat to distribute (WP.29-156-11) with an official symbol.

86. The representative of Germany, on behalf of the co-chairs of the informal working group on UN GTR No. 9, introduced the second progress report of the group (WP.29-157-21) including a brief description about the activities of Phase 2 of UN GTR No. 9. AC.3 requested the secretariat to distribute WP.29-157-21 with an official symbol for consideration at its next session and adopted the first progress report (ECE/TRANS/WP.29/2012/58).

100. The representative of Germany, co-Chair of the informal working group on UN GTR No. 9, introduced the third progress report (WP.29-158-28). He confirmed that the schedule of the group was unchanged and that drawings of the test tool were already under examination by the experts for their inclusion in the Mutual Resolution once the draft UN GTR would be adopted. He announced the intention of the group to start the examination of injury criteria at the next meeting scheduled on 5-6 December 2012 in Bergisch Gladbach, Germany. AC.3 requested the secretariat to distribute WP.29-158-28 with an official symbol for consideration at the next session and adopted the second progress report (ECE/TRANS/WP.29/2012/120).

8. The expert from the United States introduced GRSP-52-27 aimed at explaining his study reservation to the proposed amendment to the UN GTR (ECE/TRANS/WP.29/AC.3/31 and ECE/TRANS/WP.29/GRSP/2012/14). He explained that the National Highway Traffic Safety Administration (NHTSA) was currently conducting tests to evaluate differences between target/aim point and first point of contact with respect to testable area and Head Injury Criteria (HIC) outcome. He concluded that, until this testing was completed, he was not in the position to give a final decision on the proposal. GRSP agreed to resume consideration on this subject at its May 2013 session.