Proposal to clarify that the removal of an insert may also trigger additional tests with alternative dummy statures.

Proposal to improve the shoulder height requirements to properly take the dimensions of premature newborns into account.

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

Proposal to amend UN R129 concerning Enhanced Child Restraint Systems. Modifications include: adjusting shoulder height dimensions in Annex 18 table 1 to align with anthropometric data for children from 40-70 cm; permitting one additional insert layer for infants below 50 cm; establishing minimum stature of 35 cm; and adding transitional provisions regarding type-approval acceptance timelines from September 2028-2029. Changes address fit concerns for premature newborns and small children.