Your lorry has a double-deck body. The top tier is loaded and the lower deck is empty. When will the vehicle be most at risk of overturning? Your lorry has a double-deck body. The top tier is loaded and the lower deck is empty. When will the vehicle be most at risk of overturning?

• Possible answers:

   
• A. In thick fog
• B. In high winds
• C. In hot weather
• D. In heavy rain