13. The Chair of GRSP reminded GRSP about the decision of the National Highway Transport Safety Administration (NHTSA) to no longer chair the IWG due to a lack of resources. He recalled the statement of the expert from Germany at the December 2017 session of GRSP (ECE/TRANS/WP.29/GRSP/62, para. 10) that the addenda of M.R.1 which incorporates anthropomorphic test device (crash test dummies) specifications, particularly of side impact dummies (e.g. World Side Impact Dummy fiftieth percentile), be completed as soon as possible. The experts from OICA and Germany underlined that the issue is not limited to cover harmonization of side impact dummies, but all tools used in the UN Regulations. They also stressed that UN GTR No. 14 and UN Regulation No. 135 are linked to an ISO standard. This could lead to legal uncertainty as standards are copyright-protected and in addition are changed more frequently. However, GRSP agreed to focus efforts on tools covered by UN Regulations under its responsibility underlining that the lack of work progress would cause problems at the level of type approval and certification procedures. Therefore, GRSP urged its experts to find a solution for the chairmanship of the group.