Originally Posted by demoncyclist
WWhistles are illegal for bike use in Massachusetts, except by bike cops. I don't know about other states, but use caution.
And also Rhode Island....
Bell's don't work very well either unless you are close enough. You need to have adjustable volume when you need it and give information if needed,you don't have to take your hands off the brakes to yell, and your voice is free and weighs nothing.
Loud horns confuse people and are unreliable. Good for the occasional cardiac arrest though, if you want peds to just keel over and die.