What is a sign that you should stop driving?

The decision to stop driving when you become sleepy is critical for road safety. Fatigue significantly impairs your ability to focus, react, and make sound judgments while driving, which can lead to accidents. Sleepiness affects cognitive functions similar to alcohol impairment, reducing alertness and increasing the risk of falling asleep at the wheel.

While worsening weather conditions, heavy traffic, and the end of a shift may present challenging driving situations, they do not directly relate to your physical and mental state like fatigue does. In contrast, sleepiness demands immediate action as it compromises your alertness and ability to operate the vehicle safely. Therefore, recognizing and responding to the signs of fatigue is crucial for maintaining safety on the road.