Driving for a long time without resting **promotes the onset of fatigue**. Fatigue is a state that negatively affects the driver, manifesting through various symptoms that can compromise safety at the wheel.

- **Symptoms of fatigue**: When a driver is fatigued, they may experience difficulty concentrating on the road, heaviness in the eyes, blurred vision, and a feeling of pressure in the head. Additionally, they may feel numbness in the arms, move around a lot in the seat, and have slower reactions. These symptoms reduce the ability to make quick and effective decisions, increasing the risk of accidents.

- **Factors contributing to fatigue**: Driving for many hours without resting is one of the main factors contributing to the onset of fatigue. Other factors include driving fast for a long time, doing so while sleepy, or in poor health conditions.

Therefore, it is crucial to take regular breaks during long trips to avoid fatigue and maintain road safety.