Fatigue can be a killer.
Too often drivers, who are tired, refuse to give in to the brain's demand for rest. Sometimes this failure to recognize fatigue results in a serious traffic accident. Fatigue, which is caused mostly by lack of sleep, plays a role in many highway accidents. There are many indicators which warn a driver of fatigue. If a vehicle begins to drift into the other lane or wander off the road, it is a sign of fatigue.