Accident reconstructionists are often used by lawyers in auto accident and truck accident cases to answer questions about how the accident occurred. An accident reconstructionist might tell you who was driving, how fast the car or truck was going, whether the driver and/or occupants of the vehicle were wearing seat belts, where on the road the accident occurred, and so forth. Sometimes, they are useful in car accident cases on discreet issues. But, there is a growing sentiment in car accident cases that juries just don’t listen to accident reconstruction experts. Juries, this thinking goes, want to figure out how an accident happened on their own. They don’t need any help. (My view is not quite this strong on whether you should use accident reconstruction experts in liability dispute cases. Certainly, I don’t think they hurt in most cases.)
Reconstructing truck accidents is more complicated than car accidents, and there is a larger role for accident reconstruction experts who understand the nuances of truck accident cases and can communicate effectively with a jury. Unlike car accident cases, juries understand that they don’t understand trucks the way they understand cars.
One of the big issues our lawyers typically face in auto accident and truck accident cases is the debate as to the speed of the vehicles. The biggest difference in investigating truck accidents as opposed to car accidents is the number of different variables at play regarding stopping or slowing. Car accidents are relatively easy, the investigator looks primarily at the skid marks and the type of surface on which the vehicle skid. Truck accidents are far more complex. Trucks generally take 30% to 75% longer to stop than a car. Because large commercial trucks are more difficult to stop, a truck accident reconstructionist must include other variables beyond the usual friction values to calculate vehicle speed, such as brake balance and brake lag time. If speed calculations do not include these adjustments, then the calculated speed of the truck will be off base, and Plaintiff’s theory as to the speed of the truck can look ridiculous and inconsistent with the witnesses to the accident. In cases like this, the truck accident lawyer needs to find a neutral accident reconstructionist to recreate the speed of the truck and to take into account all the relevant considerations.