Shadow Problem

Im trying to make a road with using models (this road 4 models)
As you can see at the pictures below, I got some problems -
with the shadow.

Anyone who can help me fix this problem?

um, the second one looks pretty good to me

Yes but thats how it looks ingame (3. picture)

That's a model issue. Where did you got it?

I have created it. Is there a way to fix it?

Well, for 1, you could add Unshaded to the material, but then it will seem to light up in the night just like riverrushes do.

It's not hard, I had that problem before. You just have to change the normals so they are exactly vertical.