What does a white reverse light on a vehicle indicate?

• That this vehicle is in reverse gear and it may move backwards
  Explanation:

  "If you see white reverse lights on a vehicle, be aware that it may move backwards. These lights show that the vehicle is in reverse gear."
• That this vehicle is in drive gear and it may move forward
• That this vehicle is about to take a left or right turn
• That this vehicle is slowing down or stopping