Old 04-08-15, 07:41 AM
  #34  
bikemig 
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Originally Posted by Looigi View Post
Ears are unreliable. Wind noise in the ears, nearer cars/trucks and other sounds can drown out the sound of cars approaching from behind. If there is a car beside you, you won't be able to hear if another is further behind and approaching. Also the nature of the road surface and vehicles tires can greatly effect the amount of sound they make. Mirrors are 100% reliable within their field of view, which is large and steerable for eyeglass or helmet mounted mirrors.
+ 1. I did a 43 mile ride last Sunday. It was a very windy day and you couldn't hear the cars.
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