Current petrol prices have sent people seeking more efficient transportation, one too often they end up brushing up a trusty old bicycle. But as more riders take onto already packed streets and shared pathways, it’s exposing a relevant flaw in the ecosystem: the basic tools cyclists rely on, like the humble bell, haven’t quite kept up. A design that’s barely changed in over a century is now struggling to do its job, not because it’s broken, but because the world around it has fundamentally shifted.
Step onto any busy street today and you’ll notice the change immediately: a significant number of pedestrians are sealed off from their surroundings, cocooned by noise-cancelling headphones – I know I am one of them. It’s a convenience we’ve all embraced, but one that comes with a very real side effect: reduced awareness. For cyclists, that creates a growing problem, one where ringing a bell doesn’t necessarily mean being heard.
That’s the gap Škoda Auto is trying to address with something unexpectedly clever: a bicycle bell that doesn’t just ring louder, but smarter. At first glance, the DuoBell looks like a simple piece of kit. No batteries, no connectivity, no app integration (in 2026!). But beneath that simplicity is a surprisingly nuanced understanding of how modern headphones work, and more importantly, how to work around them. The project itself came out of a collaboration with acoustic researchers at the University of Salford, who set out to understand why traditional bells are less effective today in the first place.
Active noise cancellation, or ANC, works by generating sound waves that cancel out incoming noise, creating that bubble of silence. It’s incredibly effective at removing consistent, predictable sounds, but the dome has its cracks. Through testing, researchers identified a narrow frequency band, roughly between 750 and 780Hz, that slips through the protection of ANC.
Instead of overpowering headphones with sheer volume, the DuoBell targets that exact “blind spot.” One part of the bell emits sound within that frequency range, while a second resonator adds a higher-pitched tone to ensure it still sounds recognisably like a bicycle bell. Layered on top of that is a deliberately irregular striking mechanism, producing rapid, uneven hits that are harder for ANC systems to predict and suppress. It’s a genius analogue workaround to a digital problem.
In real-world testing on London streets, cyclists using the DuoBell were detected significantly earlier by pedestrians wearing noise-cancelling headphones. The difference wasn’t marginal: people reacted up to five seconds sooner, or roughly 20 meters earlier, compared to a standard bell. That extra buffer might be the difference between a near-miss and a bad start to the day of all parties involved.
It might not be the case here in hilly, wet Auckland, but cycling is booming in cities worldwide, and with it, the number of interactions between bikes and pedestrians. Data out of London alone shows a noticeable rise in cyclist–pedestrian incidents in recent years, with headphone use (aka obliviousness) increasingly cited as a contributing factor.
What makes this even more interesting is that Škoda isn’t positioning the DuoBell as a commercial product (at least not yet). Instead, they are using the research angle, releasing findings publicly to encourage adoption of the idea.
And if you think this might be farfetched for the brand, think again. Long before it was building cars, Škoda started life making bikes in the late 19th century. This project feels like a nod to that legacy. It’s the same “Simply Clever” philosophy the brand likes to talk about, only this time applied to a piece of hardware most people never think twice about.
And that’s what resonated with me about the DuoBell. A smart product that doesn’t rely on more tech, a subscription service, or more complexity. It rethinks an existing object with a deeper understanding of how people actually behave today. There’s something refreshing about solving a modern problem with a purely mechanical answer. Simply Clever.
