What care should you take when opening the door of your parked vehicle?

• You should not open your door without checking over your shoulders.
  Explanation:

  "You must never open the door of your parked vehicle without first checking over your shoulder to make sure that you will not endanger any other person or vehicle or interfere with traffic."
• You should open your door wide to stop the traffic behind you.
• You should open your door quickly.
• You should open your door in front of the cyclists.