You've just parked a lorry on the side of the road. What should you do just before dismounting from the cab? You've just parked a lorry on the side of the road. What should you do just before dismounting from the cab?

• Possible answers:

   
• A. Make sure the radio is turned down
• B. Check the rear-view mirrors
• C. Make sure the hazard warning lights are on
• D. Check that all the windows are closed