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Petzl Sherpa bike signaling device
Petzl Sherpa bike light/horn combo - After hearing about one too many cyclists being squashed by taxis and trucks in downtown San Francisco, I set out to create a device that would allow bicycle commuters to be seen and heard on the dangerous road. The device incorporates ease of use, bright light, and a loud horn. Users can choose different colors and download different horn sounds to suit their ride. Student work, Adam Hammerman, 2010.