From what I have noticed most HD riders do this "drop the left arm down as they pass thing" so you can see it if you look in the mirror. Must be their secret wave.:shocked: Personally I'm out there for my own enjoyment and treat ALL others with a courtesy nod and smile. Whether they see it or not I don't know.:f_spider:
I've noticed that too. I chalk it up to the fact that all the vibration has made their arms numb and they can't lift them above knee level.
