Eh, it's pragmatic.
It's replacing a problem you can't solve (human stupidity), with one you can (a better bell).
Human stupidity? As in allowing too much noise in the cities to the extend that people need to protect their minds?
Why can't the cyclists slow down when they see that there's a human obstacle in front of them?
Human stupidity? As in allowing too much noise in the cities to the extend that people need to protect their minds?