I've read a few threads here suggesting most bike-car accidents occur with the rider being hit from the front. Because of that and because I've perceived a similar scenario at a couple of intersections on my daily ride, I've decided to go for lights-on for day or night riding. I've also wondered if there could be any additional lights one could install on the front for visibility. Maybe it could be a unique color for cyclists. Green flashing perhaps? I suppose green is for "go" so that might not be wise. Blue is out. Something bright and unusual is required. something just for bikes.