If driving from A to B, what do these road markings mean?

A driver may not cross the lines to overtake.
A driver may cross the lines to overtake.
Oncoming traffic may not cross the lines to overtake.
Only motorcyclists may cross the lines to overtake.

Explantion: Where there is a broken white line and a continuous white line along the centre of the road, you must obey the line that is nearest to you. In this case you may not cross the lines.

Theory Tester

If driving from A to B, what do these road markings mean?

Control of Vehicle