We've ventured into wearable technology and built a motorcycle safety vest with indicator lights at the back. The lights show other motorists when the rider is about to turn left or right and also indicate when he/she is braking.
All this is controlled from the normal operation of the motorcycle where a sensor installed on the bike sends the signals via Bluetooth Low Energy to the vest in sync with the indication on the motorcycle.
The lights conform to the standard traffic colors: amber for turn signals and red for brake lights. They are water and dust proof and run off rechargeable AAA batteries that last 3 days of normal use on full-recharge.