Why You Need a Semi Truck Accident Attorney A semi truck accident lawyer may be needed if you or someone loved ones has been injured in a collision with a truck. These kinds of accidents are not common and you'll need someone who is familiar with the laws and regulations applicable to commercial trucks. There are many parties who could be held accountable for the consequences of a truck crash, including the driver as well as the trucking company, the manufacturer, and many others. A good lawyer will be in a position to guide you through these