Which passenger safety system deploys airbags from just above the top of the door frame and may or may not deflate after deployment depending on type?

• A. Head protection systems
• B. Seat belts
• C. Curtain airbags
• D. Knee airbags

Answer: (A)

Curtain airbags deploy from just above the top of the door frame and run down along the side window area to shield the occupants’ heads in side impacts or rollovers. The reason they may or may not deflate after deployment depends on design: some curtain airbags are intended to deflate after deployment to reduce obstruction and heat buildup, while others stay inflated longer to provide ongoing head protection during the crash sequence or until occupants can safely exit. Knee airbags are located low and protect the legs, seat belts are restraints rather than airbags, and head protection systems is not the typical term for this deployment location. So the described system is curtain airbags.