Ask Lemmy

Give LOTS of space when passing a bike in your car.

Give EVEN MORE when passing a horse.

So many of these are "Don't create obstacles or bottlenecks".

Return your cart, zipper merge, wait for people to get off before you get on, don't block doorways.

Clearly, the truest unspoken rule is "Get out of the way!"

Do NOT stop to talk in doorways.

Let the people out of the elevator that are trying to get out of the elevator before you attempt getting in.

When driving, you should engage your turn signal before you start applying the brakes in preparation for your turn.

Elevator Etiquette: Let people exit before you enter. That way you have more room to enter. This applies to all things, not just elevators.

Be aware of your surroundings. This is not just a safety thing for yourself, but a courtesy thing for other people.

Since the majority of people in the world are idiots, and management tends to collect them at a higher rate than other roles, you will generally be rewarded more for how you make others feel than the amount or quality of your work. A person with a 10 in charisma and 4 int gets farther than the person with a 10 int and a 7 in charisma most of the time. Focus on learning better people skills. If you find a place where your work is recognized you should cherish it.

Also in the US the left lane is for passing the right lanes.

If you need to stop while walking on a path, inside or outside, step to the side. I can’t believe how many people just abruptly stop to look at their phone, have a conversation, point out something they find interesting… like my guy, would you do that in a car? Fucking GOOOOOO!!

People exiting a building or vehicle get priority over people entering. Let people out before you go cram yourself in the way.

Push your chair in after leaving a table at a cafeteria. It blocks the path for people who are carrying trays and may not have a free hand to push it in themselves.

Do not start or continue a phone conversation when going to the bathroom - public or private restroom but especially in public bathrooms.

Zipper merging

When waiting at a red light, cars are supposed to stay out of the pedestrian crosswalk

Even if you have a green light at the crossrowds you shouldn't drive if you can see that you have no way of exiting the crossroads and would block others e.g. there is a traffic jam on the road you want to drive into.

(at least in Poland)

Remember to be kind.

When exiting an airplane, it is more efficient to remain in your row until the row ahead of you has accessed their belongings. This includes people that have no overhead luggage. Sometimes someone's overhead luggage is behind their seat and it causes noticeable congestion/delays if there are people standing in the aisle obstructing their path. An exception could be made for patrons that need extra time for mobility issues, but this is usually arranged in advance with the flight attendants. Having said that, it's best to make every effort to exit with expediency because there could be others that have very little time to reach their connecting flight.

It's safe to generally assume that most others are equally (or more) tired of being on the plane and want to leave ASAP.

Reading the answers to this questions, I'd say "Not understanding the meaning of most people".

"Do unto others..."

Even those who supposedly devote their lives to such teachings don't seem to know wtf that means

don't hold your phone while driving

Don't be a dick.

This is probably just a me thing, but if you have to use the restroom, just say that instead of saying what you specifically have to do. I don't need to know any details and you don't need to share them with anyone. The only details worth sharing is if something happens, like a pipe leak/burst or something else serious.