To explore the effects of an active seatback reset safety strategy on the motion response, injury risk and potential hazards of reclined occupants, a comparative analysis was conducted to assess the differences in occupant motion response and injury risk without the safety strategy and those with the safety strategy implemented at different reset rates. The results show that the safety strategy has an impact on the motion response, injury risk and injury mechanism of the head-neck, chest-abdomen and lumbar-pelvic regions of reclined occupants. The safety strategy significantly improves lumbar-pelvic motion response and mitigates the risk of submarining and lumbar injuries. When the reset rate is as 2.585 rad/s, substantially reduces the overall injury risk of reclined occupants is reduced. However, when the reset rate is higher or lower than 2.585 rad/s, the injury risks of neck and abdomen is increased.
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