What’s worse than an aggressive motorist? Answer: an aggressive truck driver in an 80,000 pound tractor-trailer. Unfortunately, aggressive truck drivers are a common occurrence and pose a deadly threat to the driving public. Unlike ordinary drivers, they’re supposed to be professionals held to a higher standard. And while plenty of truly professional truck drivers do exist, the high numbers of aggressive truck drivers mean that you will very likely have an encounter with one. The Causes of Aggressive Truck Driving There are several reasons for this problem. Sometimes it’s caused.