Best solution I can think of is a good ditch and a good crown to the road. In short, if you give the water the path of least resistance off the road and into the ditch, you reduce the length of it's path across the roadbed hence reduce the wash out. Makes a big difference where hills are concerned and the water can run the full length of the hill down the road.
I think a bump would not work as the water would hit the bump and be diverted making a ditch since all the water would be converging on one area.
If you had a hydraulically operated blade with ripper teeth behind a heavy tractor then you could accomplish crowning. The DR has no mechanism to keep it on the side of a hill. As shown in the pictures, it is grading a flat drive.
If you use a road gravel that sets up, usually with what they call "finds" (means parts) which is a modern day word for rock powder that accumulates from crushing rocks of a certain type you can grade the road up and vehicles pack the powder down into the rocks or vice versa. That helps to form a base that resists washing.
If the gravel is like a sand rock mix, there is nothing to bind the material together so it is easily washed away.
The gravel is easier to work in road prep however.
I have the DR catalog right here in front of me and I would have to see one of their "power graders" in action before I could comment otherwise. The idea is fine, just the ability of the unit to do a heavy duty job, especially if you do have finds in your road and it packs down tight, the DR may not be able to break through the crust.
I live on a rock road and for the past 30 years watched the county maintenance guys work the road and watched the different materials they used over the years respond to traffic and weather. So, my comments are based on that experience.
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Today's Featured Article - Tuning-Up Your Tractor: Plugs & Compression Testing - by Curtis Von Fange. The engine seems to run rough. In the exhaust you can hear an occasion 'poofing' sound like somethings not firing on all cylinders. Under loaded conditions the tractor seems to lack power and it belches black smoke out of the exhaust. For some reason it just doesn't want to start up without cranking and cranking the starter. All these conditions can be signals that your unit is in need of a tune up. Ok, so what is involved in a tune up? You say, swap plugs and file the points....now tha
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