The first time I came here to visit the Hubster, I was most impressed by the endless number of friends he passed whilst we were out driving around!
Everywhere we went it seemed other drivers were waving to him most of the time and he'd usually wave back. I was forever asking him "who was that?". What really bemused me was sometimes he didn't have a clue, it seems out here in NW rural Okieland people just wave to each other for the heck of it! LOL
I can honestly say (and I'm pretty well travelled), this is the friendliest place I have ever lived. People are just mostly 'nice' and along with that comes a ready smile and a wave. I can't tell you how refreshing that is after coming from outer London, where you're more likely to get a fist shaken at you, or the finger, than a friendly wave!
These days I am a 'waver' too, I have learned you don't need to know them, it's just a polite acknowledgement of someone elses's existence. It's not always a big 'in yer face' whole hand wave, most of the time it's just a finger raised as you pass - in a friendly manner!
Interestingly my wave % has gone up since I put my British flag tag plate on my Pickup. I guess now they can go home and say they waved to 'a Brit' just down the road today and have some fun with it!
So is this a national thing, or do they wave where you are?