This Clever Bike Bell Can Even Be Heard by People Wearing Noise-Canceling Headphones
Škoda's DuoBell is designed to avoid collisions between cyclists and pedestrians preoccupied by their podcasts.
Link :
https://www.wired.com/story/skoda-duobell-bike-bell-can-be-heard-by-people-wearing-noise-canceling-headphones/
Link :
https://www.wired.com/story/skoda-duobell-bike-bell-can-be-heard-by-people-wearing-noise-canceling-headphones/