Base on the facts stated, it seems like there is no contributory negligence on the part of the victim. You might use the Doctrine of last clear chance as a defense. Doctrine of last clear chance means the defendant has the last opportunity to avoid the accident but was not able to avoid it. Once proven that there is no contributory negligence on the part of the plaintiff and that the defendant failed to avoid the collusion of two vehicles, definitely plaintiff can ask for damages and other expenses during the litigation.
There is no "contributory negligence," paulsmith from Sydney, Australia, because California is a "comparative negligence" state.
The doctrine of last clear chance is recognized in only a handful of U.S. states that still have contributory negligence laws (North Carolina, Alabama, Maryland, Virginia, and then D.C.).
The doctrine of last clear chance can, in some cases not applicable to our California poster, allow for a plaintiff who has contributed to his injury to collect damages, which he would otherwise be barred from recovering under contributory negligence laws. The plaintiff would need to show that he negligently placed himself in peril, he was unable to remove himself from this peril, the defendant was aware (or should have been aware) of this peril, the defendant could have acted so that plaintiff could have avoided the peril, the defendant failed to exercise the ordinary care necessary to prevent plaintiff's accident/injury.
The laws in the United States vary from state to state, often in significant ways. The laws in the United States also vary from the laws in Australia, often in significant ways. It helps to keep this in mind when posting.