A bike horn that helps you avoid homicidal drivers

Loud Bicycle: Car horn for your bike
Mark Frauenfelder, boingboing.net

An out­stand­ing Kick­starter project – a bike horn that is as loud as a car horn!

Cycling in traffic can be frightening and dangerous. The Loud Bicycle horn prevents accidents by alerting motorists with a familiar sound. The safety benefits of …

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• Loud Bicycle: Car horn for your bike (boingboing.net)