What could be a potential outcome of mental fatigue while driving fast?

Mental fatigue significantly impairs a driver's cognitive functions, leading to reduced reaction time. When a driver is mentally fatigued, their ability to process information quickly and accurately diminishes. This means that even at high speeds, the driver may struggle to respond promptly to sudden changes in traffic or road conditions.

In contrast, while one might assume that mental fatigue would lead to improved concentration or awareness, the reality is that fatigue undermines these abilities. A tired driver might not be as attentive to their environment, nor would they be able to make informed decisions effectively. Instead, the mind becomes sluggish, impacting the crucial reflexes needed to operate a vehicle safely, particularly at high speeds where quick responses are essential for preventing accidents.