Proposal to add injury criteria in relation to the neck bending moment along the lateral axis (not to exceed 57 Nm when stretched), clarify the distance between the seats to align with IN R107, and annulation of the proposal to delete paragraph 2.1.2 because the scope of UN R80 provides for testing of seats for vehicles of M2 and M3 categories of II, III and B classes where approval is allowed via testing without a vehicle and mounted rigidly on a test platform.
26. The expert from Germany informed GRSP that TF on UN Regulation No. 80 had not started work due to the absence of new proposals as an alternative to the previous proposal ECE/TRANS/WP.29/GRSP/2018/10, that had aimed at removing Appendix 5 (static test requirements and procedure) from UN Regulation No. 80. The expert from OICA introduced GRSP-65-29-Rev.1 which proposed a compromise to the complete deletion of the static test as the static test will provide the basis for a simpler testing of small projects or Class I vehicles. He proposed a two-step approach: (a) the first step was presented with GRSP-65-29 Rev.1 with more stringent requirement for the attachments and fittings of the seat and (b) the second step would be a revision of the static and dynamic test. The expert from the United Kingdom acknowledged the need of small manufacturers to retain a static test as alternative and supported the proposal as a viable compromise. The experts from Finland, Italy and Russian Federation expressed similar views. The expert from Germany acknowledged that GRSP-65-29-Rev.1 had partially solved the problem of construction and fixation, and thus should be intended as a compromise that could be improved in the future. The expert from the Netherlands suggested that in the future, only the dynamic test should be used. Finally, GRSP adopted GRSP-65-29-Rev.1, as reproduced in Annex IV of the session report. The secretariat was requested to submit GRSP-65-29-Rev.1 as new 04 series of amendments to UN Regulation No. 80, for consideration and vote at the November 2019 sessions of WP.29 and AC.1.
22. The expert from Germany introduced GRSP-64-22 and
GRSP-64-23 superseding ECE/TRANS/WP.29/GRSP/2018/10, aimed at removing Appendix 5 (static test requirements and procedure) from UN Regulation No. 80 (GRSP-64-22) and at improving the dynamic test (GRSP-64-23) in two different series of amendments. The expert from OICA suggested that both tests be maintained as alternatives and that the static test be improved as a first step. The expert from Italy supported the approach of the expert from OICA. The expert from the Russian Federation introduced GRSP-64-19 and Add.1, proposing to include the assessment of the dummy neck injury criteria into the dynamic test of the UN Regulation. The Chair of GRSP suggested creating a task force of concerned parties led by Germany to provide a revised official document that would incorporate GRSP-64-19 and other comments submitted to the secretariat by 15 February 2019. The expert from Germany agreed with the Chair’s proposal and the expert from OICA offered his contribution in drafting the revised document.
24. GRSP resumed discussion on the proposal tabled by the expert from Germany (ECE/TRANS/WP.29/GRSP/2018/10), aimed at removing the static tests and improving the dynamic test on seat anchorages. The expert from Germany continued provide evidence to GRSP through a new presentation (GRSP-63-32 and a Video Presentation No. 1) to support his proposal. He stated that the current requirements of the UN Regulation allows the approval of seat systems in busses on the basis of a static test procedure which does not provide an adequate level of protection compared with the dynamic procedure. He added that tests with one seat model showed that occupants could be exposed to a high risk of death or serious injury in an accident from the collapse of the seat fixation. Finally, he informed GRSP that comparable seat fixations failure had been observed in bus accidents, and occupants had already been killed or seriously injured. He added that the German administration is concerned that these severe accidents could happen again in the future. The expert from the Russian Federation proposed to postpone the decision to the December 2018 session of GRSP. He justified his recommendation on the lack of research on the issue. He added that the Russian Federation considered it premature to exclude static tests from UN Regulation No. 80 and proposed to revise this type of test. He also suggested amending the dynamic test methodology according to ECE/TRANS/WP.29/GRSP/2018/10 and to the outcome of research conducted in the Russian Federation. Finally, he announced his intention to present these research results, accompanied with a draft amendment to UN Regulation No. 80 at the December 2018 session of GRSP. Several experts raised a study reservation to verify further statistical data. The expert from OICA also requested more time to prepare a revised proposal and requested to keeping GRSP-63-17 as a reference in the agenda of the next session.
25. GRSP agreed to resume discussion at the December 2018 session and invited experts to reach an agreement on this subject at that session.