What should be the safe following distance between columns of lorries?

Correct answer: B (80-100 meters)

📖 Explanation of the rule: When driving in a convoy of trucks (or other long vehicles), traffic regulations require you to maintain a specific distance between separate groups of vehicles. This is crucial for traffic flow: by keeping this distance, drivers of smaller vehicles can safely overtake the convoy in stages, pulling into the gap between groups of trucks rather than attempting to overtake the entire long string of vehicles in a single, risky maneuver.

💡 Tip: View this rule not just as a legal obligation, but as a standard of road courtesy. Maintaining the proper distance significantly reduces the frustration of other drivers and prevents the formation of dangerous traffic jams caused by slow-moving heavy goods vehicles.