The draft Amendment 2 to GTR No. 9 proposes to establish the new FlexPLI impactor as the single harmonized tool for lower leg impact tests. The amendment also proposes injury assessment reference values (IARV) to go with the FlexPLI. The US, however, has consistently expressed concerns that the proposed injury thresholds and IARV have not been validated as appropriate for the American car fleet. Therefore, the US proposes to have ‘recommended’ IARV included in the preamble to Amendment 2 while allowing governments the freedom to use whatever IARV/performance thresholds they deem appropriate until such criteria can be fully validated.

Proposal to clarify provisions of the headform tests of UN GTR No. 9.

The draft Amendment 2 to GTR No. 9 proposes to establish the new FlexPLI impactor as the single harmonized tool for lower leg impact tests. The amendment also proposes injury assessment reference values (IARV) to go with the FlexPLI. The US, however, has consistently expressed concerns that the proposed injury thresholds and IARV have not been validated as appropriate for the American car fleet. Therefore, the US proposes to have ‘recommended’ IARV included in the preamble to Amendment 2 while allowing governments the freedom to use whatever IARV/performance thresholds they deem appropriate until such criteria can be fully validated.

Proposal to clarify provisions of the headform tests of UN GTR No. 9.