Thanks for diving into this! Yes, our Crusher, method and the Lignin binds sand and silts in a great way. If there is a lot of clay, we would also like to add some lime to help with the internal moist, here we have several carbon neutral solutions. Our finished road is more waterproof (compared to a gravel road without Lignin f.ex) and our roads helps a lot with the draining of water from the road. However, as on every road, the shape of the road is important so the water finds the shortest way out of the road, and the ditches should be maintained as for any other road.