**Fatigue** is a state that negatively affects driving ability. When a driver is fatigued, they experience a series of symptoms that impact their performance behind the wheel.

- **Physical fatigue** causes a feeling of tiredness, while **psychological fatigue** makes concentration difficult.
- Some symptoms of fatigue include difficulty concentrating, reduced vision and hearing, slower movements, and increased irritability and nervousness.
- These symptoms cause the driver to have **difficulty making decisions** and **react more slowly**.

Due to these effects, a fatigued driver tends to **drive more passively**. This means that their ability to react quickly and make effective decisions is compromised, which can increase the risk of accidents. Therefore, it is crucial to recognize the symptoms of fatigue and take measures to rest before continuing to drive.