What effect does fatigue have compared to alcohol consumption?

Fatigue significantly impacts a driver's cognitive and motor skills in a similar manner to alcohol consumption. When an individual is fatigued, their ability to focus, react quickly, and make sound judgments declines, paralleling the effects of being under the influence of alcohol. Studies have shown that both fatigue and alcohol can impair alertness, decrease attention span, and slow down reaction times, which can lead to an increased risk of accidents on the road. This understanding emphasizes the importance of being well-rested before driving, just as one would avoid driving after consuming alcohol.

The other options do not accurately reflect the nature of fatigue. While fatigue can indeed worsen vision and increase reaction time, stating that it has "none at all" or only increases reaction time overlooks the broader and more serious implications of fatigue on overall driving capabilities.