"Don’t stand on opposite sides of a hallway to have a conversation, thus making people cut between you. stand on the same side, so people can easily pass.

Be mindful on sidewalks and don’t walk 2 (or more) abreast, making it difficult for faster walkers to pass.

Let people get off the f@#king elevator/bus/whatever before you shove your way on.

Don’t come to a dead stop at the bottom of a stairway or escalator to stare at your phone.

Situational awareness, people."