What impact does fatigue have on driving ability?

Fatigue significantly affects driving ability, primarily leading to increased irritability. When a driver is fatigued, their mental and emotional responses can become impaired. This heightened irritability can manifest in frustration or impatience, which might compromise the driver's ability to respond appropriately to road conditions and traffic. The emotional state can also lead to aggressive driving behaviors, diminishing overall safety for both the driver and others on the road.

In contrast, options such as enhanced concentration, faster decision-making, and improved risk assessment do not accurately reflect the common consequences of fatigue. Instead, fatigue typically results in decreased cognitive functions and an inability to make sound judgments, which may lead to poor decisions behind the wheel. Therefore, recognizing and acknowledging the relationship between fatigue and irritability is crucial for maintaining safe driving practices.