Proposal to amend UN R17, including revised definitions of head restraint, corrections to paragraph references, replacement of terminology such as “absorption” with “dissipation” and “reference line” with “longitudinal vertical plane passing through the R-point,” revised test procedures in multiple annexes, and modifications to measurement requirements for head restraint displacement and strength testing. The text was adopted by GRSP at its seventy-eighth session based on ECE/TRANS/WP.29/GRSP/78, Annex IV.A. Amendments

Proposal to amend UN R17 Supplement 1 to the 12 series of amendments. The Regulation is amended to account for vehicles of category X. Vehicles of category Y are not in the scope of this Regulation. The Regulation is extended to vehicles without driver and manual driving controls. Multiple amendments are made to definitions, test procedures, and technical requirements for seats, anchorages, and head restraints, including changes to measurement planes, test parameters, and displacement specifications across various annexes and paragraphs.