Are some of us such poor drivers that we can't even stay between the lines on the highway? I was driving home and met a pickup truck completely onto my side of the double solid line in a set of winding curves. Was the driver not paying attention or was he so intent on not slowing down that he straightened out the corners to avoid braking? I suspect that it was the latter.
The simplest road does not have any lines painted on it and one of the first things that we learn is that we drive on the right half of a two lane road and may only use the other half in limited circumstances. You must drive on your half unless it is not practical to do so.
You will have to be able to justify the impracticality if you find yourself in traffic court disputing a ticket or civil court following a collision.