Data to support change from plastic to aluminum hip cup in order to resolve Q-dummy problem where the plastic cup has not been strong enough to retain the hip joint (ball and socket) in position.

Presentation of proposal for interim solution to allow for booster cushions without a backrest to be kept in UN R44 (but prohibited for children smaller than 125 cm) pending development of provisions for non-integral i-Size booster seats with integrated backrest under UN R129 (Phase2).

Review of UN R129 testing with regard to child dummy performance, submarining, pelvic/abdominal measurements, and injury criteria.

Data to support change from plastic to aluminum hip cup in order to resolve Q-dummy problem where the plastic cup has not been strong enough to retain the hip joint (ball and socket) in position.

Presentation of proposal for interim solution to allow for booster cushions without a backrest to be kept in UN R44 (but prohibited for children smaller than 125 cm) pending development of provisions for non-integral i-Size booster seats with integrated backrest under UN R129 (Phase2).