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:

  "Never open the door of your parked vehicle without first making 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.