Originally Posted by noglider

I'm in between @rekmeyata's point of view and those who use every feature of every gadget. So I'd like to know what a radar can offer me. I use a rear view mirror and other gadgetry, and I listen and look well. I've been riding on streets for 49 years. A radar will tell me that a vehicle is behind me, but how will it enhance what I already have? When there's nothing but traffic as far as the eye can see, I already know there are cars coming at me from every direction. What new information will it give me?