If it's true that a picture is worth a thousand words, then maybe this one will perform a good service. I took this photo in Ohio today, on I-64. What you are looking at is the result of two large trucks, a dump truck and a semi, colliding. It looked to me as if the cab of the semi had been separated from the trailer and was on the far side of the rail, hence the plume of smoke on the left. Traffic was diverted through the adjacent rest area. To the left, just out of the photograph, EMTs were working on one of the drivers. On the CB, I heard a driver say, "Hey, that truck is from my company!" He asked if both the drivers had been removed from the burning trucks, and several other drivers responded that they could only see one driver being worked on. The radio grew uncommonly quiet. I finally got stopped for the night just a short while ago, but a quick search on the internet confirms that one driver died in the crash.
I sometimes fear that I sound like a nag while posting occasional safety reminders, but this is important. The lack of attentiveness, if only for a second, can be the difference between life and death. And whatever you do, don't linger around large trucks because if something happens with one of them, your world can come crashing down in an instant.