In our nearby little town everyone speaks to everyone else. We usually add a bit about the weather and maybe, for those of us out-of-towners, about the state of our water tanks.
We also do the finger-off-the-steering-wheel wave - men and women. Neighbours do a full wave at each other while driving. One local farmer waves with both hands like a Gospel singer. An elderly lady does a open-and-close fist wave, like a flashing-light mime. I'm perfecting the wiggly-fingers, twinkle-twinkle-little-star wave myself.
When I was growing up in Melbourne people said "Good morning", "Good afternoon" or "Good evening" in a very proper way. Men tipped their hats. Women nodded. Sounds like something out of an old, old, old movie.
Cheers, Joy