How does fatigue specifically affect driver performance?

Fatigue significantly impacts driver performance by reducing focus, slowing reaction time, and impairing decision-making abilities. When a driver is fatigued, their cognitive functions are compromised, leading to an inability to concentrate on the road, the surroundings, or even basic driving tasks. Reaction times slow down because the brain struggles to process information quickly, which can prevent drivers from responding adequately to sudden changes in traffic or road conditions.

Moreover, decision-making is affected as fatigued drivers may misinterpret signals, ignore important cues, or delay responses to potential hazards. This combination of diminished focus, delayed reactions, and poor decision-making greatly increases the likelihood of accidents and unsafe driving behavior.

In contrast, options that suggest fatigue has no effect, improves performance, or increases physical strength do not reflect the well-documented research regarding the dangers of fatigue. In reality, fatigue not only depletes physical stamina but also severely undermines the mental acuity necessary for safe driving.