Informal Group on GTR 7 (Phase II) | Session 13 | 23-24 Apr 2013
Paris
Agenda Item 3.
Injury Criteria – Progress report

Dr Kevin Moorhouse. (verbal update only)
Since the Brussels meeting NHTSA has carried out one more PMHS test. Previously tests had raised a question over rebound as it could not be certain whether injuries were due to the impact or rebound phase. In response, a Toyota Camry seat was used with seat belt retractors to alleviate rebound motion. In the subsequent test the injuries were consistent with those observed without rebound control.

NHTSA expected PMHS #6 to be tested on 26 April 2012 and hoped that this will yield sufficient data for injury criteria to be developed. It was noted however that it may be necessary to conduct the full series of 8 PMHS tests before full conclusions can be drawn.

Based on the 6 tests, Dr Moorhouse anticipated completion of the data analysis by the end of May/June and to have proposals for injury by July/September. Dr Ono, will also try and work towards this September date, but emphasised the amount of work that needs to be done. Philippe Petit (LAB) offered to help with injury criteria.

Concern was raised that, with injury criteria becoming available in September, very little time was available to gain experience with the recommendations. Philippe Petit suggested that Dr Moorhouse take this injury criteria question/list into the ISO group – agreed.

The chair confirmed that he did not intend to seek confirmation from the GTR7 group on specific injury criteria values at the September informal group meeting but that it was important that there be a full discussion there as the suggested criteria will be provided to the GRSP group in December. He acknowledged the interest in sharing the recommendations with ISO but cautioned that the UN ECE group was not referring the discussion to ISO.

NHTSA showed a comprehensive list of injury criteria. Presented at the London meeting GTR7-09-06:
- http://www.unece.org/fileadmin/DAM/trans/doc/2012/wp29grsp/GTR7-09-06e.pdf

Documentation
GTR7-09-06 Preliminary PMHS Injury Risk Curves & Potential IARVs in Rear Impact (NHTSA and OSU-IBRL)