My 2 cents, we own a property in a Central Wheat Belt town in WA, it was a government building and backs on to the council offices. When we first bought the property everyone in town used our driveway & back yard as access to the council offices. We have not tried to stop all access, but have put up bunting when our son it playing in the back yard. Most people in town now know that we are there on weekends, it is now private property, and don't cut through when the 'troll is parked in the driveway. But we still get a few that even have to give the engine a rev as they go past the kitchen window.
Graham