I own two pieces of property. Where I live is a little over 300 acres and you can get a mile away from even a seldom used gravel road. I also own 62 acres that borders a busy US highway. I killed my biggest buck, by far, with my back touching the bottom of the highway fill. The deer a mile from a gravel road act no more or less alert than the deer 50 yards from the US Highway. What is interesting to me, is where I hunt by the US Highway, the deer do not look towards the highway nearly as much as they do back into the woods. It is like they dont expect danger from the highway. No doubt about it, the highway makes for a noisy hunt