I gotta believe that the majority of these accidents are at night. I nearly ran down a ninja cyclist in my car about 6 months ago. The only giveaway that he was there were the wisps of the pedal reflectors going up and down. I also saw a roadie last December that was begging for a Darwin Award. Big bright 30 watt halogen headlight, and nothing, nada, zip for a taillight. When my bike is set up for night riding, have two chainstay blinkies, a rear reflector/blinkie, a second rear blinkie, and two drop-bar blinkies. Usually, I only have a couple set to blink. In the front, I have a Blackburn Quadrant as my "Oh ****e I forgot the time" light(always mounted on the bike), and a 6v pair of halogens with a 4A sealed lead acid battery as my "I'm riding after dark" light. Without at least one blinkie and a reflector, I wouldn't even contemplate riding at dusk, let alone darkness.