GRSP-77-25
UN R129: Proposal for Supplement 3 to the 04 Series of amendments

This proposal removes rebound head contact from the head acceleration requirement for all CRS.

UNECE server
Excerpts from session reports
GRSP | Session 77 | 5-9 May 2025

27. The expert from CLEPA introduced informal document GRSP-77-25 regarding head acceleration requirements in UN Regulation No. 129, stating that he was asking for early feedback and intended to come back to the next session of GRSP to continue the discussion.

GRSP | Session 78 | 1-4 Dec 2025

32. The expert from CLEPA reintroduced informal document GRSP-77-25 on head acceleration requirements and following the feedback received announced his intention to submit a modified proposal as a working document to the next session.