Yes, you would need to split the road then apply the 'unsealed' attribute to one of the parts. You split lines (roads etc) at nodes: select a node then right click, should be a scissors icon. Create a new node first if there's not one where the surface changes.
Yes, you would need to split the road then apply the 'unsealed' attribute to one of the parts. You split lines (roads etc) at nodes: select a node then right click, should be a scissors icon. Create a new node first if there's not one where the surface changes.