How does driver fatigue affect performance in long races?

Driver fatigue significantly affects performance in long races primarily by leading to slower reaction times and reduced decision-making abilities. When a driver becomes fatigued, their cognitive functions can decline, resulting in a diminished ability to process information quickly and accurately. This means that when split-second decisions are required—such as when negotiating a corner or responding to other drivers—fatigued drivers may take longer to react or make poor choices that could compromise their safety and racing strategy.

Additionally, fatigue can impact physical performance. As fatigue sets in, a driver’s ability to maintain control of the vehicle diminishes, affecting their steering precision and control over acceleration and braking. The combination of impaired cognitive and physical performance can lead to a significant increase in the risk of errors, which could result in accidents or decreased lap times.

Moreover, while fatigue affecting fuel consumption or having no significant impact might be considered, the direct influence of fatigue on cognitive and physical capabilities is well-established, making the assessment of slower reaction times and reduced decision-making the most pertinent consequence of driver fatigue in the context of long races.