Originally Posted by
mdarnton
I can't swivel my head fast enough to keep up with Chicago downtown traffic. Sound means nothing when it's everywhere all the time. I wish I had six more eyes. But a mirror works, in the meantime.
Not only does a mirror work, but if safety is the goal it works much better.
A proper mirror allows for effortless and ongoing real time monitoring of situations behind
as they develop... something that a head turn or two never could. This is especially the case for helmet / eyeglass / visor mounted units which can cover it all with only a slight turn of your head. I'll do quiet neighborhood and bike path rides without 'em but much prefer not to forgo such a handy tool while on busy and/or high speed roads.