California law requires that all vehicles carry auto insurance to help pay for injuries and damages that happen when involved in a car crash. When you have been hit by an uninsured driver you will need to file an uninsured-motorist claim against your insurance policy. It is important to contact an attorney immediately after having been hit by an uninsured driver because your insurance company is not on your side when you make such a claim. In fact, the insurance company will require that certain criteria be satisfied before even considering paying your property damage and personal injuries.