Quote:
Originally Posted by Onno
Why not use both? The radar's beep notifies me to look in my mirror, or, if conditions are stressful, simply to move over and get ready for a car or truck to blast by. Because bike mirrors are small and convex, and because lots of cars don't have or use day-time running lights, my radar's ability to detect cars is much better than my ability to see them in my mirror.
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Take a look mirrors are not convex.