What is a cyclist riding on the carriageway advised to do if they need to turn left in difficult traffic conditions?

Explanation

For safety, a cyclist who needs to turn left, turn around or cross to the other side of the road is advised to get off the bike and cross the carriageway on foot, wheeling the bike like a pedestrian. This is especially sensible in heavy traffic or other tricky conditions, where merging across lanes on the bike would be risky.