An American inventor living in the UK has won an international design competition for a cycling jacket that changes colors when the cyclist brakes. According to the inventor the idea came from wanting to feel safer when cycling in London.
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Chen told BBC News that the first version was a cheap waterproof jacket with LEDs stuck on it with gaffer tape. Chen noticed that cars gave him more room and passed slower at night when wearing the jacket.
An accelerometer in the jacket sensed movement and changes from green to red when braking and a tilt switch makes LEDs in the arms flash when the cyclist lifts an arm to signal a turn.
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Via BBC News