Originally Posted by RobbieTunes

Thank you for that. I was about to ask if folks with mirrors routinely actually see hazards, identify same, analyze the risk and take evasive action because they have a mirror. I've ridden thousands of miles, and not yet have we had to do anything but stay where we should be because someone identified a car back.

My main threat is oncoming cars passing other oncoming cars, and mirrors don't help that.

I'd really like to hear of more situations or routines (like commuting) where the rider is actually using the mirror to take action. I simply ride as if there's a car back all the time. It's the highway, after all.