Can someone...anyone...explain how knowing a car is behind you makes any difference whatsoever? Please?
I've asked this in other threads and never gotten a response. In other words, what do you do with the information? What do you do differently? Are you pulling off the road or something? It seems to me that if you do anything differently based on whether or not a car is behind you is just a recipe for disaster, because you're going to eventually get it wrong.
To be clear, I'm not suggesting anyone ride with music or headphones if they don't feel safe doing so. I'm just tired of people making statements about how unsafe it is without offering some kind of rationale.