How do fatigue and stress affect a driver's performance?

Fatigue and stress significantly impair a driver’s performance by negatively affecting concentration and overall mental acuity. When a driver is fatigued, their alertness decreases, which can lead to slower reaction times and an inability to focus on the road and the surrounding environment. This diminished concentration increases the chance of missing vital information, such as traffic signals or the behavior of other road users.

Additionally, high levels of stress can elevate anxiety and distract the driver mentally, causing them to be less aware of their surroundings. These factors combine to greatly heighten the likelihood of accidents, as the driver may not respond adequately to sudden changes or hazards on the road. Understanding these effects is crucial for maintaining safety and making informed decisions regarding driving and rest breaks, especially for those who may be on the road for extended periods.