Unfortunately, falling asleep while driving is a frequent cause of car accidents. The long and straight sections of the road are the most dangerous. The monotony combined with fatigue can easily make us fall asleep. It usually lasts a second or so, but the aftermath can be devastating. If you feel sleepy or tired, let someone else drive, or just park the car and have a nap. Don’t worry about being late. Better late than never.
People invented these interesting road signs that ask all kinds of interesting trivia questions. It will give you and your travel companions something to talk about or keep your brain stimulated if you are driving alone.