Bike commuting sometimes feels like you need eyes in the back of your head. Backtracker is a radar-based bike light that wants to be your extra eyeballs. The light on the back flashes more frequently as cars get closer, while a handlebar mount alerts you to the nearness.
• A Radar For Your Bike, So You Don't Have To Have Eyes In The Back Of Your Head | Co.Exist
(Image credits: Backtracker)