What direct consequence does the onset of sleep or drowsiness in the driver cause?

Question

DentroTest · Accepted Answer

Drowsiness is one of the most dangerous psychophysical risk factors in driving, especially in heavy vehicles, where the consequences of an accident are serious. Sleepiness impairs decision-making, reduces attention and makes the driver take greater risks unconsciously, resulting in much more dangerous behavior at the wheel. On the other hand, drowsiness increases reaction time (it takes longer to respond to the unexpected), so saying that it decreases it is incorrect.

What direct consequence does the onset of sleep or drowsiness in the driver cause?

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