You're driving on a motorway. What does it mean if the car ahead shows its hazard warning lights for a short time? You're driving on a motorway. What does it mean if the car ahead shows its hazard warning lights for a short time?

• Possible answers:

   
• A. The driver wants you to overtake
• B. The driver is going to change lanes
• C. Traffic ahead is slowing or stopping suddenly
• D. There's a police speed check ahead