The Backtracker handlebar unit indicates the position of the cyclist (green LED at top) and the relative distance of a motorist closing in from behind (white LED)
As a vehicle approaches, the tail light switches from its regular slow blinking mode to one that's more rapid
The Backtracker system consists of two modules, mounted on the handlebar and seatpost
Earlier this month, we first heard about a radar system for cyclists, known as the Backtracker. In a nutshell, it emits radar pulses to the rear of the bike, then warns the rider when it detects vehicles approaching from behind. Although it's not yet commercially available, I recently had the chance to try out a pre-production review unit. It definitely shows promise, but could perhaps use one tweak.
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