You're driving a lorry weighing more than 7.5 tonnes on a motorway. What does this sign mean? You're driving a lorry weighing more than 7.5 tonnes on a motorway. What does this sign mean?

• Possible answers:

   
• A. Maximum speed 40 mph
• B. Maximum speed 50 mph
• C. Maximum speed 60 mph
• D. Maximum speed 70 mph