Also, the laws are in place because they provide for the punishing of parents who fail/refuse to use safety restraints and/or devices on their children. As I understood it (it's been a long time since the law has been explained to me and it may have changed), in Washington state, if an adult is driving and a child under the age of 18 (regardless of relationship to the adult) in the car is not wearing a seatbelt, the adult is ticketed.