A semi accident lawyer can play a key roll in determining who is liable following a semi accident. Semi accidents are the most dangerous on the road for a number of reasons. Truck accidents are statistically the fatal form of auto accidents. Semi accidents usually cause major damage, and due to the size and weight of semis, even a wreck at five miles per hour can cause whiplash injuries. In addition, semi accidents can be dangerous for a number of different reasons if a semi is hauling fuel, hazardous materials, or livestock. All this leads to a tremendous and often long-term cost. In addition, determining fault is not always easy. While driver error does play a part, many other conditions can cause accidents as well, such as mechanical failures, tire blowouts, loading issues and brake failure. Many of these bring in third party liability, as truck operators, vehicle manufacturers and equipment manufacturers can all be help accountable for causing the accident. This is another area where a semi accident lawyer can help.