What % of crashes are almost always fatal when you fall asleep at the wheel?

It is 87%. 87% fatal are the crashes created because of drowsy driving or falling asleep while driving. Falling asleep while driving, also known as drowsy driving is one of the most major problem and major cause of car accident in different parts of the world. According to the National Sleep Foundation during 2005’s sleep in America poll, about 60% of the adult drivers have tried driving a vehicle while feeling sleepy or drowsy. This result is equivalent to about 168 million people. In this poll also, it was noted that one-third or 37% have actually fallen asleep while driving, that equals to 103 million people.