On average, there are 500,000 crashes involving large trucks in this country. There are many reasons why large trucks are involved in accidents, and they often involve negligence. But that doesn't mean the truck driver is always at fault. In fact, 75% of accidents between trucks and smaller vehicles are caused by the smaller vehicle. Some of the most common errors a small car driver can make include abruptly changing lanes in front of a truck, trying to squeeze in to the right of a truck making a right turn, and passing a truck in an unsafe manner. Yet a truck driver must driver responsibly as well. If you are involved in a semi truck crash, be sure to contact a personal injury attorney to help in investigating the cause of the crash. They have means of obtaining "black box" data that is not readily available to you that can change the course of a liability claim.