Odd you should ask that.... Last night, I was driving home in my car (took several people different places--otherwise, I would have ridden), and I noticed several people with rather dim lights. Some were flashing, and some not. I started thinking about this very thing--two lights, but what if one were more bright? I decided, while watching the lights, that it would probably be better to flash the dimmer one. Otherwise, the flashing bright one would completely overpower the dim one burning solidly.

I'll be honest, however, I saw a fellow with a nice, bright rear light burning solid, and two bar-end LEDs also burning solid. Looking at him in my mirror, I decided that of all the bikes I had seen, his was the most visible and furthermore, most recognizable of every bike i had seen in the evening. He certainly made me start reconsidering my own lighting scheme. Right now, I've got a three-way blinker on the back, mounted to my rack (three lights in a tight group, blinking in rotation) I'm now considering getting some lights to hang off the side somewhere, to make a larger triangle. I wish I could use bar-end lights, but I've got shifters there. :-( In any case, after last night, I highly suspect that having multiple super-bright, solid lights in a decent array might work better than blinkers. Also, I'm beginning to wonder why bike lights are so small. Motorcycles and cars have much larger lights, which, alone, makes them more visible, without having to burn so irritatingly bright. Something else to consider...