I find myself wishing I had a courtesy bell, or similar warning sound, when driving slowly near pedestrians on residential streets (esp. with no sidewalks).
But I have a bell on my bicycle. People on foot seem to consider it rude, even on shared trails. Esp. if you interrupt their device interaction. Many people resent having to share space, regardless how they are traveling.
@brent @displacedcanuck @chad this pedestrian is truly grateful when cyclists use their bells! It only startles me when someone waits until they are a few feet away from me before they ring.