Upgrading to gravel indeed. My parents house back in Wisconsin has the bitumen roads all around the area. They litterly slap down tar, then pile small rocks o

Upgrading to gravel indeed. My parents house back in Wisconsin has the bitumen roads all around the area. They litterly slap down tar, then pile small rocks on top of it, occasionally they take a roller to if but mostly they don't and leave the weight of the cars to finish the road. So there is no such thing as a flat road, and continuous tire dips are formed along the whole length of the road for water, snow and ice to collect in.