You're in the left-hand lane on a three-lane motorway. Why should you check for any vehicles in the right-hand lane before you overtake? You're in the left-hand lane on a three-lane motorway. Why should you check for any vehicles in the right-hand lane before you overtake?

• Possible answers:

   
• A. They may be moving faster than you
• B. They may move back to the middle lane as you move out
• C. They may cut in sharply behind you
• D. They may accelerate briskly in front of you