Prohibiting an individual from driving or attempting to drive an all-terrain vehicle or a snowmobile on portions of a highway in the State on which an all-terrain vehicle or a snowmobile is authorized unless the individual holds a driver's license or is specifically exempted; applying specified provisions of law relating to the operation of a snowmobile to the operation of an all-terrain vehicle; prohibiting a person under 16 years of age from operating specified vehicles on public property unless accompanied by a specified adult; etc.