Occupied
The London Heathrow airport has special lights on top of the stalls to show which of the stalls are occupied and which ones are empty. It is a better way than knocking on every door and asking if someone is inside.
The London Heathrow airport has special lights on top of the stalls to show which of the stalls are occupied and which ones are empty. It is a better way than knocking on every door and asking if someone is inside.