Quote Originally Posted by tatormc
My hubby does this just as a way to say hi to other cyclists.
I am sure it is well intended but just warn him that it can frighten or surprise some of us enough to fall off the bike. Especially if I am climbing and very concentrated on my front wheel, I don't pay much attention to the noises around me and a loud honk can really be brutal at that moment...

I guess this is true when coming from behind. When coming in the opposite direction, I probably would not mind as much and wave hello in return...