Parenting was the answer to kids not wearing their seatbelt, and getting maimed and killed by very survivable accidents. Simply teach your kids to wear their seatbelt. Yet seatbelt laws reduced fatality (8%) and serious injury (9%) in kids. It follows that "piling" such a law "on top", one that people decried as unconstitutional, was a better idea than deferring to the parents.

https://www.nber.org/system/files/working_papers/w13408/w134...