When may you overtake another vehicle by passing on its left-hand side? When may you overtake another vehicle by passing on its left-hand side?

• Possible answers:

   
• A. On a free-flowing dual carriageway or motorway
• B. On a dual carriageway or motorway when the traffic is moving slowly in queues
• C. On a two-way road when traffic is moving slowly
• D. On a two-way road when the car in front is signalling to turn left