Rules of the road??

[Eden]

And remember there are honks, and then there are honks.

As has been pointed out here before, in many states it's technically required to give an audible signal before passing on a two-lane road. A driver who taps their horn when they're four or five car-lengths behind you is probably just trying to be courteous.

And in some states (like this one) where the law makers are more sensical its illegal to use your horn for anything but an emergency...... (especially and specifically not on cyclists) Please don't honk at cyclists. We know that there are cars on the road and we can *hear* you believe it or not.