What is one common sign of driver fatigue?

One common sign of driver fatigue is frequent yawning or blinking. These physical manifestations occur because when a driver is tired, their body reacts by trying to combat drowsiness. Yawning is a natural response that the body uses to increase oxygen intake and stimulate the brain, while frequent blinking can indicate that the eyes are struggling to stay open and focused. Both signs suggest that the driver's alertness is declining, elevating the risk of an accident.

In contrast, signs like increased speed, sudden lane changes, or excessive use of the horn tend to indicate different driving behaviors, which might suggest aggression, distraction, or impatience rather than fatigue. Understanding these signs of fatigue can help drivers recognize their limits and take necessary breaks to ensure road safety.