Do you have a bike horn you love? Tell me about it.
I sometimes ride my bike across the Golden Gate Bridge, which has a shared cyclist/pedestrian area. It has a lot of ambient highway speed traffic noise, pedestrian tourists who sometimes step into the marked bike lane directly in front of oncoming bike traffic without looking first, tourist bicyclists who are frequently stopped in the bike lane, and several entirely blind turns where close call head on collisions are the norm. I'm looking for a bike horn that can be heard above the ambient traffic noise to beep at pedestrians and cyclists when I'm going around the blind turns and when a collision is imminent because someone has stepped into or stopped in the bike lane without first checking to see if it's clear.
This question was asked previously a decade ago about bike horns for car traffic. While I would occasionally find it useful to honk at cars, I'm much more concerned about signaling to pedestrians and cyclists and probably don't need something nearly so loud for that.
(Also if you are planning on walking across the Golden Gate Bridge anytime soon, this is a PSA to look both ways before leaving the pedestrian area. Thank you, it will keep us all safe.)