148. The representative of the United States of America provided a brief overview on the status of the discussions on Amendment 3 (head-form impact areas) and on amendment 4 (Deployable Pedestrian Protection Systems (DPPS)) of the UN GTR. He clarified that at the December 2021 session of GRSP, the experts from Germany and from the United States of America reported on the results of the meetings of the informal Task Force, which had not reached an agreement by the time of that session of GRSP, yet. Therefore, GRSP was not able to recommend amendment 3 to the Executive Committee of the 1998 Agreement (AC.3) at its March 2022 session. It was further noted that the work of the informal Task Force was suspended and that once the informal working group on deployable pedestrian protection system (IWG-DPPS) would finalize its work, another IWG should be established to solve the remaining issues of the UN GTR.

149. On amendment 4 on DPPS, he explained that the IWG Phase 1 would include numerical simulation for head impact time (HIT) against the vehicle in case of deployable systems and a marker in the preamble for generic approach to be developed in the next phase. He also informed that the expert from Japan had proposed a sentence about an equivalent method (physical or alternative numerical simulation) to the numerical simulation to be agreed by Contracting Parties. He clarified that the request by Japan to allow optional alternatives could be temporarily resolved by including the statement in the preamble (Part A) in brackets. He concluded that not yet completely listed remaining issues would be eventually discussed in a Phase 2 of the work on DPPS. The representative from Korea, Chair of DPPS-IWG, complemented the above-mentioned information, clarifying that a draft proposal of Amendment 4 would be discussed at the May 2022 session of GRSP.

150. The Chair of AC.3 expressed concern about the finalization of Amendment 3 to the UN GTR, since the original proposal submitted to vote at the March 2021 session of AC.3 (see ECE/TRANS/WP.29/1157, paras. 143-148) was returned to GRSP for urgent review, and the expectation that the issues could be resolved quickly. The representative of the United States of America stated that exchange of information among informal Task Force members and GRSP experts was ongoing and hopefully a full agreement would be reached on few remaining issues by the end of 2022.