Q #173 - When may you cross a double solid white line in the middle of the road?
You may cross the solid white line to pass a stationary vehicle or to pass a pedal cycle, horse or road maintenance vehicle if it's travelling at 10 mph or less. You may also cross the solid white line to enter a side road or access a property.
To pass traffic that's queuing back at a junction
To pass a car signalling to turn left ahead
To pass a road maintenance vehicle travelling at 10 mph or less