CR4 Nov 2021 13:43
https://www.consumerreports.org/automotive-technology/how-much-automation-does-your-car-really-have-level-2-a3543419955/
excerpt -
Why Driver Monitoring Is Critical
Some systems have gotten so good that many drivers are being lulled into a false confidence when using ACC with a sustained lane keeping system. It is human nature to tune out when input seemingly isn’t needed, mile after mile, and it is very difficult to rapidly transition from being inattentive to making a crucial driving action, such as swerving or rapidly decelerating. Driver attention monitoring can help by reminding the driver to keep their eyes on the road when they wander.
Models with a sustained lane keeping system don’t require the driver to continually steer to keep the car within the lane, but most require the driver to have their hands on the wheel. However, this does not ensure that the driver is actually looking at the road. Only a direct driver monitoring system (DDMS) can detect eye and/or head movement, looking for the driver to be alert and facing ahead.
Of 227 models in Consumer Reports’ new car ratings, only two have adequate direct driver monitoring systems coupled with ACC and sustained LKA: the Cadillac Escalade and Chevrolet Bolt EUV. Other automakers, such as Ford and Nissan, will soon be adding this safeguard to their models.
The best systems use cameras to track a driver’s eye movements. When the system determines that the driver is not watching the road, it can activate a series of visual, audible, and/or vibration warnings. The best systems can automatically come to a safe stop and call for emergency aid, if the driver fails to respond to the warnings.
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