Updated proposal (based on document GRSP/2019/5) to specify a head restraint height between 720 mm and 830 mm including a new method for measuring the effective height of head restraints, use of the Biofidelic Rear Impact Device (BioRID II) test dummy, and to improve the overall text. This proposal also eliminates the backset measurement test procedure using the HRMD method.

Proposal to amend document GRSP/2019/10. The proposal clarifies the way to apply and to understand GTR7 phase 2 static alternative provisions and aligns the area where the gap is measured to actual practice in UN R17 and FMVSS 202a which consider only gaps over a height of 540mm.