Isn’t it funny, the Elevator Ethics. But they are true. Its just, you have to observe these things with an active mind.
You step into the elevator, turn around, push the button of your destined floor, stare up on the floor indicator until the one your desired turns on, wait for the door to open, and step out. There could be nominal exchange of smiles if someone happens to be in the elevator when you entered. But, always maintain your private space. Don’t let that person dare violate it. Be as stern as possible as if you have been confined in some cage. Don’t stare at people, don’t talk unnecessarily, reply as if you are being forced to do so.
A simple test: If you want to learn the consequences of not following these ethics, try entering some elevator with people already inside and don’t turn around and keep staring at the people with friendly smile on your face. Or, start singing… or just introduce yourself to others.
You can well guess even without trying how people maintain the Elevator Ethics.