Originally Posted by
Pragmatic
That solid white line you refer to is the demarcation line between the actual road and the hard shoulder. I believe it is illegal to cross over that line to either park or drive. The white line is there instead of kerbs being as it's cheaper and easier to construct a road in rural areas that way.
When should you use the hard shoulder?
The hard shoulder: A narrow emergency lane along the left of a motorway, separated by a solid white line. Most deaths on the hard shoulder happen within 30 minutes of the driver pulling over. Using this part of the motorway should be an absolute last resort, for a breakdown or emergency