I don't know if they would count as lights, but it a pretty good idea.
http://www.designboom.com/technology/the-safest-bike-on-the-road-is-100-reflective/
@HoKe started
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I don't know if they would count as lights, but it a pretty good idea.
http://www.designboom.com/technology/the-safest-bike-on-the-road-is-100-reflective/