No one would argue that a roller is bad. Right now - raining in CA- I'm guessing you could land plane, let the folks drive the road for a month or so, to see the results, and spray the Dust Off right after the next storm. The variables are the type and condition of road base. The subsoil condition and the amount of organic matter in the soil. If it isn't your road and all you are trying to do is keep the dust down I'm wondering why the extra time and expense to make everything perfect?
Someone mentioned land plane and I got carried away with myself, yea your right all I need to do is spray the road.