+2 to a backup light. I have a MagicShine as my main light, and a TerraLux flashlight as a backup.
If you only have 1 light, turn it off for a second on a dark road and see how un-fun it would be to ride with no light.
When I know I'll be riding in the dark, I'm often on my rain bike which has reflective tape front & back and on the crankarms for a little extra "be seen" visibility. Sometimes a reflective vest too. I'm a Fred at night. Better Fred than dead.
Last edited by Homebrew01; 10-30-11 at 09:37 PM.