Liability is the legal responsibility for the accident. Human error causes the vast majority of tractor-trailer accidents. Those responsible for a truck accident include the unqualified truck driver, who has an advanced duty of care to operate the vehicle safely and legally, and other drivers on the roadway, who also have a legal duty to take reasonable actions to avoid harming others. The trucking company that hired the driver and needed to ensure that they were properly licensed, trained, and physically healthy enough to handle the day-to-day rigors of the job and that the truck is adequately insured and maintained can be liable as well. Additionally, there can be a liability for the agency that maintains the roadway where the accident occurred, the manufacturer or distributor of defective parts used on the tractor-trailer or other vehicles involved in the accident, and others whose carelessness or recklessness factored into the accident. To prove who was liable for your accident, you must show: The at-fault party had a duty to take reasonable actions to avoid harming others. There was a breach in that duty when the at-fault party took careless or reckless actions. This breach resulted in a tractor-trailer accident in which you were injured and subsequently incurred expenses and impacts.