It isn't being a bad parent per se though - it is knowingly enabling a behaviour of your child that leads to the criminal event.
In your example, if a parent gave a child keys to the car and told them to drive, knowing they were an inexperienced driver without a driving licence and than a fatal accident occurred - that parent would also be culpable.
In your example, if a parent gave a child keys to the car and told them to drive, knowing they were an inexperienced driver without a driving licence and than a fatal accident occurred - that parent would also be culpable.