In some cases, an accident victim may be able to sue parties other than the at-fault driver. For example, if the at-fault driver did not own the car, the car's owner may also be liable for your damages. If the at-fault driver was impaired from consuming too much alcohol, you may be able to bring a "dram shop" complaint against a business that knowlingly served alcohol to the driver if he or she was a minor or a habitual drunk. In some cases, you may be able to bring an action against another party, such as an automobile manufacturer or construction company, if a defect in the vehicle or the roadway caused the accident or increased the injuries. If the accident involved a tractor-trailer, the driver's violation of rules and regulations may be the basis for a lawsuit against the driver or his or her employer.