Most of the motor vehicle-related personal injury lawsuits that go through King County courts have two parties: the injured plaintiff and the defendant. The plaintiff argues that the defendant caused the accident through negligence, and therefore should be held liable for the plaintiff's damages.
The issue of liability is more complicated in cases involving commercial or government-owned vehicles such as buses or trucks. In these cases, the bus or truck driver may be held liable if they caused the accident through their own negligence, but there may be other liable parties as well.