ViaCerber gives you a calm heads-up about speed checks and road dangers before you reach them — and an urgent alert the moment you're over the limit. Eyes on the road, not the speedometer.
Free · Privacy-first · CarPlay-ready · 78 languages
ViaCerber isn't a gadget — it's built on decades of peer-reviewed road-safety science. Here's what the evidence says, with sources you can check.
A moving car's kinetic energy is ½ × mass × speed². Because speed is squared, driving just 10% faster carries about 21% more energy to dissipate in a crash — and going from 50 to 70 km/h nearly doubles it. That energy is what injures people.
Kinetic energy, E = ½mv²Total stopping distance is reaction distance (you keep moving while you react, ~1–1.5 s) plus braking distance, which also rises with the square of speed. Shave a little speed and you stop meters sooner — often the difference between a near-miss and a collision.
Vehicle dynamics; reaction-time researchNilsson's Power Model, refined by Elvik, shows injury crashes rise roughly with speed², serious crashes with speed³, and fatal crashes with speed⁴. A 5% cut in average speed can mean around 20% fewer fatal crashes.
Nilsson (2004); Elvik (2009)A pedestrian struck at 30 km/h has roughly a 90% chance of survival; at 45 km/h it drops below 50%. This is why slow, well-signalled zones save lives — and why a timely warning to ease off matters most exactly where people walk.
WHO; Rosén & Sander (2009)A Cochrane systematic review of 35 studies found speed cameras reduced average speeds and cut injury crashes by 8–50% and fatal/serious crashes by 11–44% in their vicinity. Knowing a check is ahead changes behaviour — that's the point.
Wilson et al., Cochrane (2010)Most speeding is unintentional — drivers drift over the limit without noticing. A clear, well-timed cue restores attention before it matters. ViaCerber surfaces the limit and what's ahead so the safe choice is the easy one.
Human-factors research on driver attentionCalm when you're safe, loud when it counts.
A calm chime when a camera or check is ahead — and an escalating, urgent siren with a spoken "slow down" the moment you cross the limit (plus your tolerance).
Accidents, stopped vehicles, objects on the road, police and traffic jams — announced in time to react, and only for hazards on your side of the road.
See what other drivers report around you, and confirm a hazard or clear it with one tap. Crowd confidence decides what stays on the map.
A follow-me map with your speed, the limit, and the next danger — alerts that sound even with your phone locked, so you never look down.
ViaCerber adapts to local rules automatically: aggregated danger zones in France, and alerts disabled where camera-warning apps aren't permitted.
No account. Your location stays on your device and is only shared as an approximate area or a report you choose to send. No ads, no tracking.
Grant location once, tap start, and mount your phone or connect CarPlay. ViaCerber watches the road in the background.
Your speed and the current limit are always visible. When a check or danger is ahead, you hear it early — and urgently if you're over the limit.
Spot something? One tap adds it to the map for drivers behind you. Confirm or clear what others report. Everyone arrives safer.
Camera-warning rules differ across Europe. ViaCerber handles that for you.
Exact camera locations are never shown. ViaCerber aggregates them into legally compliant "danger zones", the same approach used by major navigation apps.
Where using a camera-warning app while driving isn't permitted, ViaCerber automatically disables alerts in-country and re-enables them when you cross into a permitted region.
ViaCerber does not detect or jam radar or laser signals. It shows speed limits and community/open-map data — and you remain responsible for obeying the law where you drive.
No. ViaCerber is an information app — it does not detect, receive, or jam radar or laser signals. It shows posted speed limits and the locations of fixed cameras and community-reported hazards from open data.
Rules differ by country. ViaCerber adapts automatically — showing aggregated danger zones in France and disabling alerts in Germany and Switzerland, for example. You are responsible for ensuring your use complies with local law.
You get a calm chime when a speed check or danger is ahead, and an escalating urgent siren with a spoken "slow down" if you're over the limit. Hazards like accidents and police are announced regardless of your speed.
Yes. ViaCerber shows a follow-me map with your speed, the limit and the next danger on the car screen, and alerts sound even when your phone is locked.
Fixed speed-camera data comes from OpenStreetMap, which covers much of Europe well, with a live on-device fallback so the map is useful wherever you drive. Live hazards come from the community.
Yes. There's no account. Your location is processed on your device and only sent as an approximate area to fetch nearby dangers, or as a report you choose to submit. No ads, no third-party tracking.
ViaCerber is free to download and community-powered. See the App Store listing for the latest details.
No. It's a driver-assistance aid. Always obey traffic laws, road signs and the posted limit, and never interact with your phone while driving — use CarPlay or a hands-free mount.
Join the drivers making the road safer for everyone — one alert, one report at a time.
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