You're travelling on a motorway in England. When must you stop your vehicle? You're travelling on a motorway in England. When must you stop your vehicle?

• Possible answers:

   
• A. When signalled to stop by a roadworks supervisor
• B. When signalled to stop by a traffic officer
• C. When signalled to stop by a pedestrian on the hard shoulder
• D. When signalled to stop by a driver who has broken down