You're on a smart motorway. What does it mean when a mandatory speed limit is displayed above the hard shoulder? You're on a smart motorway. What does it mean when a mandatory speed limit is displayed above the hard shoulder?

• Possible answers:

   
• A. You shouldn't travel in this lane
• B. The hard shoulder can be used as a running lane
• C. You can park on the hard shoulder if you feel tired
• D. You can pull up in this lane to answer a mobile phone