A bus driver can be held at fault for causing an accident. However, bus accident lawsuits are not always clear because state and federal laws differ in who they say is at fault for such accidents. "Common carriers" are defined as being someone whose business is transporting people or material items from one place to another for compensation; such services typically are open to the public. Common carriers, which include commercial bus companies, are governed federally and by most state governments, and the drivers of these vehicles are required to have adequate training and equipment to complete their duties. Bus drivers consequently are subjected to strict standards for their performance and can be found at fault in bus accidents. However, the involvement of insurance companies and contractors in accident legal proceedings make questions of who is at fault much more complex. Because state governments are involved in establishing their own common carrier regulation, bus accident litigation action can vary widely from state to state. Finding an experienced lawyer who is familiar with the common carrier laws of the area in which the accident took place and insurance policies regarding bus accidents is highly advisable.