This can vary from state to state. In Maryland for example, a minor with a learner's permit is not allowed to drive with other minors in the car.
World Heritage listing;Dingoes;surf fishing;untrafficable by normal vehicles....all add up to more tourists in more 4 wheel drives
If you are driving, a solid white line means that you cannot legally change lanes, but that cars on the other side are going in the same direction as you are. These are commonly used in construction areas where the lanes shift and it would be dangerous for cars to make lane changes.
legal age in Queensland for a full drivers license is 17, but 16 and 9 months To go through your L's and P's etc. Before you get you full license.