Session 68 | Geneva | 7-11 Dec 2020
Agenda Item 12. UN Regulation No. 129 (Enhanced Child Restraint Systems)

GRSP agreed to resume consideration on a proposal for limit values on the chest vertical acceleration of Q-dummies during the dynamic testing of Enhanced Child Restraint Systems (ECRS) tabled by the expert from Japan (GRSP-66-28). GRSP may also wish to consider three proposals prepared by the expert from the European Association of Automotive Suppliers: (a) to provide instructions to consumers in a digital form (ECE/TRANS/WP.29/GRSP/2020/15), (b) on the test report template and dimension assessment method (ECE/TRANS/WP.29/GRSP/2020/16) and (c) to clarify that specific vehicle belted ECRS may be fitted with a support leg, top tether and lower tether attachments (ECE/TRANS/WP.29/GRSP/2020/18).

GRSP may wish to consider additional proposals regarding UN R129.

Working Party on Passive Safety | Session 66 | 10-13 Dec 2019
Working Party on Passive Safety | Session 67 | 20-23 Jul 2020

22. The expert from CLEPA reiterated a proposal (GRSP-67-33) (superseding ECE/TRANS/WP.29/GRSP/2020/3 and GRSP-67-16) and a presentation (GRSP-67-34) aimed at: (a) providing instructions to consumers in a digital form, (b) recording essential measurement information in the type approval system and (c) improving the procedure for assessing the external dimensions of Enhanced Child Restraint Systems (ECRS). The expert from Japan raised a study reservation on instructions to consumers in a digital form; consumers without access to internet should receive the same information in paper copies. GRSP agreed to resume discussion on this subject at its May 2020 session and requested the secretariat to distribute GRSP-67-33 with an official symbol.

23. GRSP resumed discussion of ECE/TRANS/WP.29/GRSP/2019/19 on limit values on the chest vertical acceleration of Q-dummies during the dynamic testing of ECRS, as agreed at its December 2019 session (see ECE/TRANS/WP.29/GRSP/67, paragraph 41). The expert from CLEPA recalled to GRSP that this decision aimed to allow the collection and analysis of data monitoring. The expert from CLEPA clarified (see GRSP-67-23) that data were subsequently provided by the Type-Approval Authority and the Vehicle Certification Agency (VCA) of the United Kingdom. He added that these were supplemented with a sample from CLEPA, in order to derive the proposed limits for tension force, Fz and flexion moment. He then introduced a proposal (see GRSP-67-24) of amendments to the injury assessment criteria for frontal and rear impact to specify limit values for tension force and flexion moment measured in the upper neck of the Q0, Q1 and Q1.5 dummies. However, he recommended that other contracting parties also provide monitoring data to support this analysis and confirm the proposed limits. GRSP endorsed the request of the expert from CLEPA and agreed to resume discussion at its December 2020 session based on a revised official proposal. Moreover, the experts from the Global NCAP and ANEC on behalf of CI withdrew ECE/TRANS/WP.29/GRSP/2019/19. GRSP agreed to defer consideration of GRSP-66-28 to the December 2020 session, due to the lack of time.

Working Party on Passive Safety | Session 68 | 7-11 Dec 2020

21. The expert from CLEPA introduced:

  1. ECE/TRANS/WP.29/GRSP/2020/15 and GRSP-68-02-Rev.2 amending it, to provide to consumers information on a digital form.
  2. ECE/TRANS/WP.29/GRSP/2020/16 and GRSP-68-25-Rev.1 amending it, concerning the test report template and dimension assessment method.
  3. ECE/TRANS/WP.29/GRSP/2020/18 and GRSP-68-11-Rev.2 amending it, to clarify that specific vehicle-belted Enhanced Child Restraint Systems (ECRS) maybe fitted with a support leg, top tether and lower tether attachments.

22. GRSP adopted ECE/TRANS/WP.29/GRSP/2020/15, ECE/TRANS/WP.29/GRSP/2020/16 and ECE/TRANS/WP.29/GRSP/2020/18, all as amended by Annex III to the session report and requested to submit them, as whole package, as draft Supplement 5 to the 03 series of amendments to UN Regulation No. 129, for consideration and vote at the June 2021 sessions of WP.29 and AC.1.

23. GRSP resumed discussion on limit values on the chest vertical acceleration of Q-dummies during the dynamic testing of ECRS, on the basis of GRSP-68-05 tabled by the expert from CLEPA. The expert from CLEPA introduced the proposal through a presentation (GRSP-68-10) showing GRSP that collection and analysis of data monitoring was progressing. He further encouraged Contracting Parties to the 1958 Agreement to provide data to support the analysis and the proposed limits. The expert from Spain introduced a presentation (GRSP-68-26), showing the test results conducted by her technical service on the effects of dummy type Q1.5 chin-thorax contact in measuring upper neck forces. GRSP noted that further data collection was needed and agreed to resume discussion on this topic at its May 2021 session.

Documentation
GRSP-68-02/Rev.2 | UN R129: Proposal for Supplement 5 to the 03 series of amendments (CLEPA and Japan)
GRSP-68-05 | UN R129: Proposal for the 04 series of amendments (CLEPA)
GRSP-68-10 | UN R129: Explanatory presentation on CLEPA neck load limits proposal (CLEPA)
GRSP-68-11/Rev.2 | UN R129: Proposal for Supplement 5 to the 03 series of amendments (CLEPA)
GRSP-68-13 | UN R129: Proposal for Supplement 5 to the 03 series of amendments (Spain)
GRSP-68-25/Rev.1 | UN R129: Proposal for Supplement 5 to the 03 series of amendments (CLEPA)
GRSP-68-26 | Effects of Q1.5 chin-thorax contact in measuring upper neck force (Spain)
GRSP/2020/15 | UN R129: Proposal for Supplement 5 to the 03 series of amendments (CLEPA and Japan)
GRSP/2020/16 | UN R129: Proposal for Supplement 5 to the 03 series of amendments (CLEPA and Japan)
GRSP/2020/18 | UN R129: Proposal for Supplement 5 to the 03 series of amendments (CLEPA)