Proposal to modify document GRSP/2014/15 presenting Amendment 2 to GTR No. 9. Amendment 2 would introduce the flexible pedestrian legform impactor (FlexPLI) as a single harmonized test tool. The National Highway Traffic Safety Administration (NHTSA) has expressed concern whether the injury assessment reference values (IARV) proposed in Amendment 2 will be able to meet the needs for injury mitigation in the United States of America. In order to allow the amendment to move forward, the United States proposes to accept the IARV while noting in the statement of technical rationale and justification its continuing research into the IARVs and the possibility of a future proposal to amend the values should this prove warranted.