1 . GRSP agreed to set up an informal working group on pedestrian safety Phase 2 in order to further develop proposals to amend UN GTR No . 9 on introducing the Flexible Pedestrian Legform Impactor ( Flex-PLI ) ( ECE/TRANS/WP.29/AC.3/24 , ECE/TRANS/WP.29/1079 , para . 101 ) .