My scariest was about 12 years ago when I was driving tractor trailer. My wife and I teamed pulling exhibits and trade shows. We were coming out of Denver in late November, and only had about 7000lbs. in the trailer. We were to stop in Oklahoma city to pick up another load the next day, and continue on to Florida, where we were going to leave the rig, in one of our agents lots, and go on a long tropical vacation. It was our last run of the year. Just outside of Stratton, Colorado, we ran into a severe snow storm. It came up fast. The snow was blowing horizontal and there were large patches of ice on the road. I was trying to find the next exit sign. Just about the time I was driving across one of those ice patches, a strong gust of wind hit the trailer like a boat sail. The snow had drifted onto the road just in front of us, and you could barely see. Suddenly you couldn´t see a thing as the truck was jacknifing, plowing into the snowdrift, and throwing white everywhere. I didn´t know which way to try to steer, even if i could have, because I couldn´t see where I was. We ended up in the median. The Kenworth, was totalled. The under carriage was torn apart, broke the bell housing, and bent the frame pretty bad. Fortunately neither one of us was hurt, but to this day I can still hear the involuntary screams and the loud snapping sounds of the truck breaking up. It scared us enough, that we debated for 5 months whether to go back out on the road or not. In time we got over it. Though I was never charged with a preventable from the carrier, or given a citation by the highway patrol, from that day on, when I see ice, I shut down. Since that time I¨ve told many an overzealous dispatcher, "There is nothing you can put in the back of this truck, that is worth me risking my life". I have also seen several times, since then, trucks that kept going in bad weather, sitting in the median, rolled over, or through the gaurd rails, the next morning when i got back out there. It was a lesson I´ll never forget.