You're driving an articulated lorry on a three-lane motorway. When can you drive in the right-hand lane? You're driving an articulated lorry on a three-lane motorway. When can you drive in the right-hand lane?

• Possible answers:

   
• A. When overtaking a slow-moving car in the middle lane
• B. When the escort vehicle of an oversized load signals you to pass
• C. If no speed limiter is fitted to your lorry
• D. If your lorry is unladen