California does not answer a teen-driver crash with one automatic “parent liability” rule. Start by separating the driver, the person who signed the driver-license application, the parent or custodian who permitted the trip, the registered owner, and the insurance contract. One person may occupy more than one role, but each role has its own factual trigger.
For the license-application chapter, Vehicle Code section 17700 defines a minor as a person under 18. That definition should not be stretched to every driver commonly described as a “teen”; an 18- or 19-year-old is outside this particular minor-driver chapter.

