According to the U.S. Department of Transportation, 500,000 truck accidents happen every year. And each year, this type of accident is fatal for about 5,000 people. While not all of these accidents are the fault the truck driver, there are many things a truck driver can do to prevent accidents from happening. Here are three common types of truck accidents and how to prevent them. Jackknife When a large truck goes into a skid with a trailer attached, the trailer can swing out and form a 90-degree angle with the cab of the truck.