Need corrections from some friends using English (4) what is the most dangerous thing among the three drunk driving, drowsy driving and phone conversaiton while driving? - I think drowsy driving is the most dangerous than others. there is even an old saying in Korea that the hardest thing to overcome than anything is your eyelids when you feel sleepy. I also have experienced the dangerous situation while driving a couple of years ago. I was driving on the first lane of highway at 100 kph. and I nodded off before I knew it , just for 1~2 seconds then I woke up. I realized My driving lane was changed from first to third. If there had been a few cars next to me, I wouldn't be here. Just think about it scares me. I was lucky.