...and there's me thinking it was my baggy trousers, knee socks, orange Brompton and grizzled apperance... !Perhaps its my grizzled appearance and garb consisting of a white helmet, polar top, flourescent yellow tabard, jeans, cycle clips and hush puppies?
It's always been thus. Back when I drove motorcycles, there were no end of different "clubs" who would deign to wave cheerily - or not - at other bikers. Drive a BMW, like I did, and you were doomed to be acknowledged only by other BMW riders. These days, I accept that the following will not respond to my cheery nod:
* anyone on the drops, working hard - reasonable
* anyone in lycra & wrap-round shades
* anyone under 30
* anyone on a fatbike
* anyone on a 'leccy bike, which is odd 'cos my Brompton is (discretely) 'leccy
Other than that, I'd say it was 50/50 - I try not to take it personally!
I drive an orange mini cooper and am dim-witted enough to wave at any other on-coming orange mini driver - thus far, not a flicker...