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. 2021 Nov 27;21(23):7921. doi: 10.3390/s21237921

Table 6.

Summary of the prospects of arousal level detection and estimation technology for autonomous driving.

SAE’s Autonomous Driving Level Purpose of the Technology
0, 1, 2 and 3 Detect and estimate the driver’s drowsiness and notify the driver of the result to prevent human error caused by drowsiness.
4 and 5 Detect and estimate the driver’s drowsiness and makes the driver sleep so that they can comfortably reach the destination.