There seems to be no way of showing roads created from shapefiles in buldozer. We were told that the internal build has this option but ours either does not work or no one has told us how it works.
The roads used on Stratis and Altis are based on Shapefiles that become roads ingame. However, we are seemingly unable to view them in buldozer making it difficult to tell where objects should be relative to them. For example, it is difficult to line a bridge up with a road you can't see.