First, always inform your personal insurer of any accidents, even when you are not at fault. Then, you will need to submit a claim with the opposite driver’s insurance company, though they may try to keep away from blame or decrease your damages. California insurance coverage law requires insurance coverage firms to offeruninsured and underinsured motorist(UM/UIM) coverage to drivers. If a driver injured in a crash has UM/UIM protection, their insurance company ought to compensate them for his or her damages brought on by the uninsured driver, up to the liability limit.