You guys don’t have an indicator near the door handle?? It’s super common in the Netherlands. Almost every toilet has a small indicator, except for maybe some old doors the owners didn’t replace, but all else always shows if it’s occupied or not (not that people won’t try anyway even if red for occupied).
The problem solver [workchronicles] (startrek.website)
Why don't public restroom stalls have OPEN/OCCUPIED indicators like porta potties do?
I hate peaking under the stalls or knocking doors to figure it out. The answer is so simple.