[DeanFL]

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My MAIN question re the GV80 - Did the Driver knee-air bag inflate properly? If so - Why did these severe injuires occur ro Tiger? And why, I feel, Hyundai/Genesis execs may have concerns...
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What safety features does it include? Standard on every GV80 are the usual complement of airbags: front, front side and full-length side curtain. However, it stands out by offering several airbags that are not typical: driver knee airbag, a front center airbag and second-row side airbags. Also included are the usual stability control and antilock brake systems with brake assist (the L.A. County sheriff reported there were no skid marks, indicating that Woods made no attempt to brake). Advanced driver assistance and accident avoidance technologies are also standard: lane-departure and lane-keeping assist, forward collision warning, automatic emergency braking, evasive steering assist and driver inattention warning

Rollover deployment of side airbags
Side curtain airbags can be designed to deploy in a rollover crash. Sensors that measure a vehicle's sideways movement and tilting can detect if a rollover is about to occur, triggering deployment. These airbags typically inflate within the first 10-20 milliseconds of a rollover crash and can remain inflated longer than regular side curtain airbags (10 or more seconds) to protect during multiple-roll crashes. They typically cover the window opening and inflate more stiffly to prevent ejection of the occupant.

The government doesn't specifically require side curtain airbags with this capability, but automakers have been using them to meet a requirement that all 2018 or newer vehicles prevent occupant ejection through side windows.