Heck yeah. Sixteen-year-old brains aren't developed enough to assess risks and consequences properly. Eighteen-year-old brains aren't quite, either, but you gotta start somewhere. There's a good reason insurance companies drop your rates when you turn 25, and charge an arm and a leg when you're 16, and it's not just experience. Australia doesn't license drivers until they're eighteen, and then it's a provisional license which doesn't allow them to drive some of the more dangerous vehicles. Australia isn't exactly a high-density country, either.