Center White Lines
In a normal carriageway there are the center line, the hazard line and double white lines, confused, look it up clearly covered in the highway code Lines and lane markings on the road (127 to 132) .
Learn to look ahead for changes in the center lines they all mean something. You must not cross a solid white line, if you are hazy on the 5 exceptions perhaps you should refresh your memory of the highway code.
Just before you go from a center to a hazard line what about a little rear observation, a mirror check would be appropriate as you are just about to enter an area with reduced visibility or the approach to a hazard. As you hunt ahead for the change from a solid or hazard to a centre line that will be the first point on the road where you will have a view and we all like a view.