Bike Biz (September 7th, 2015)

Handlebar-mounted sonar checks for close overtakes

“Measuring the distance a motorist gives a cyclist when overtaking is usually done by “eye” or by estimating distance from video recordings, both of which can suffer from inaccuracies. Now an American company has created a handlebar sonar unit.

The C3FT was designed by Austin-based engineering firm Codaxus for a US police force in a State with a “3 foot passing law”. However, the unit could be used by academics, local authorities and police forces worldwide. Video-equipped cyclists now regularly post footage of close overtakes but the cameras favoured by “helmetcam” cyclists often give distorted wide-angle views.



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