Originally Posted by Daniel4

Mirror. Convex but not extremely convex. If it's too convex you can't see the car approaching from behind you until it's just over your shoulder - that's too late.

Originally Posted by Jim from Boston

I use both left and right rearview mirrors, in my case Take-a-Look eyeglass mounted ones. I got the idea from a cycling companion who used only a right hand mirror.

The additional right hand mirror affords a pretty good rearward view, but is particularly useful:...