IMPORTANT, look at my latest comment update!
Unfortunately the Scandinavia does not add new road overlays and instead reuses American ones that don't really fit the setting
I'd propose creating a new set of textures that incorporate the side dashed marking pattern on each edge side of the road, as seen in real Sweden
I tried to visualize it in game by reusing a custom road textures I had made for my own Polish map, that also uses that side dashed pattern and those are the effects:
This makes the region look much more at home and true to its Scandinavian setting, so have a road overlay that still has a dashed lane separator in the middle and those additional dashed pattern lines on the sides.
This will also require to create a variant of bridge models and of a cracked road segments to incorporate the new texture.