I don't know, VR, I haven't been particularly impressed with what I have read or heard of any of the bicycle turn signal setups. The ones that have integral batteries don't seem weather-resistant or bright enough to be practical for my purposes. In the back of my mind I have been working on a design using amber behive trailer markers on a bracket in back, car flashers, and individual switches bar-mounted near brake hoods. In effect, two completely separate lights. Seems like it should be pretty easy to put together; it's just not a high priority for me.

Hey, I got what I considered high praise for my front light a couple of weeks ago. As I approach him a pedestrian said "Man, I thought you were a motorcycle with that light!"

Buckeyheaven, if such a flashlight produces enough light to satisfy you, go for it. I was using a 3 LED headlight until the morning it's light was not sufficient to avoid a fresh diesel spill that put me in the hospital. Now I want at least 20 watts and prefer 35.