Originally Posted by
nuke_diver
The assumption is that if you call out "on your left" the person actually hears that and not some garbled noise because of the wind.
Exactly why I don't bother. When I am riding with friends and try to talk they can't hear or understand anything unless we are right next to each other.
My favorite thing I've noticed lately is I will pass younger guys on single speed/fixie because they are going slower than my cruising speed. They apparently see that as a challenge to their manhood and pedal like hell to pass me and I wait for them to gas out and then pass them hard and never see them again for the rest of my ride