Yes. California operates based off of a principle known as comparative negligence. Under comparative negligence laws, each person in a motor vehicle accident claim will be assigned a percentage of fault in causing the accident. After the percentages have been assigned, each party will be required to pay the claimed damages based on the ratio of that percentage. For example, if you are assigned 25% of fault in the accident that caused the damages you are claiming, you will be required to cover 25% of those damages and the other party will be compelled to compensate the 75% of damages that they were deemed responsible for.