Long time ago back when I was a reckless young'n crisscrossing the states in my car. There were two incidents that stick in my head involving semis. 1. Back then before I started driving trucks I would at the spur of the moment take a weekend trip in my ford festiva several hundred miles one way, sleeping in my car, showering at the truck stops etc. This one particular trip I was pushing myself in the middle of the night, trying to make it to a ball game on time that morning. Sleep deprivation was an understatement; I was doing everything I could think of to stay awake- from sticking my head out the window to shoutimg out loud nothing worked. I finally started to give in to sleeping behind the wheel with some serious dozing off and weaving all over that lonely road. It was about this time unbeknownst to me that a semi far behind saw my weaving and immediately sprung into action. Pulling up right in back of me he threw on his high beems which quickly woke me from my semi-conscious driving. I wisely pulled over and slept. 2. Very similar situation; travelling hundreds of miles from home on the weekend. Knowing I had to makeb it back to work that monday morning. Pushing myself this time in the middle of the day to stay awake. Here I am swerving all over the lanes again amd just up the way here comes toll. i remember slowing for the toll several thousands of yards out and that about when I completely dozed off again. The next thing I remember was a loud blast from a semis air horn. I woke up and saw myself just feet away from the toll booth gate. At the same time I glance to my right to see the trucker who blasted his horn two lanes over from me. We quickly eyed each other and I saw that he was blowing at me: apparently seeing me a ways back swerving and or seeing me rolling up to the booth with my eyes closed. I'm certain if it wasn't for that blast I would have did a battering ram on that toll booth gate.