While yelling will get someone’s attention, bells on bikes are a less aggressive way to let someone know you’re approaching. The problem is that many bells aren’t exactly placed where they can be easily accessed – meaning that riders have to take their hands off the handlebars to use the bell.
The Trigger Bell, which was designed by London cyclists Stefan Buxton, allows it to be quickly accessed with a single finger! Buxton is now wrapping up a Kickstarter campaign and has already surpassed his goals. That might be something to ring about!