Why You Need a Semi Truck Accident Attorney A semi truck accident lawyer might be required if or someone loved ones has been injured in a collision with a truck. These kinds of accidents are rare and you'll require someone who is knowledgeable of the laws and regulations applicable to commercial trucks. Truck accidents can create liability for many parties including the trucking company driver, manufacturer, and many others. A skilled lawyer will know how to navigate these areas to ensure you get the compensation that you are entitled to. 1.