If you have been injured in a car accident, you are likely focused on filing a lawsuit against the driver of the other vehicle. While that is always a possibility, there are others against whom you can file a personal injury claim.
This can allow you to lodge a negligence action against a defendant with deeper pockets who can not only pay your medical expenses but can also pay other claims such as compensatory damages and property damage in a jury award or settlement agreement.
Of course, when you file a lawsuit as a plaintiff, you will likely be naming the driver of the other vehicle as a defendant. However, there may be other parties who bear some of the blame for the accident. Your personal injury attorney will likely look to see if there are other defendants who can be added to the lawsuit.