Why don't public restroom stalls have OPEN/OCCUPIED indicators like porta potties do?

https://lemmy.world/post/7839327

Why don't public restroom stalls have OPEN/OCCUPIED indicators like porta potties do? - Lemmy.World

I hate peaking under the stalls or knocking doors to figure it out. The answer is so simple.

We have these for years in Europe
Where is the 6 in gap between the door and stall??
America
You got me there 😂