Where I am, it's a matter of being seen, as I am on well lit roads. It's the drivers that need to be alerted to my presence. So I got the Sefras TL-ST blinky that I strapped on the seat stay, and a Viewpoint Flashpoint blinky (really bright) on the seatpost. Lots of white, yellow and red reflective tape and a Serfas SL-200 front light (may end up with something better if it doesn't cut it.) I also found a neat light at REI that is a long thin (like a thick spaghetti strand) tube that I wrapped around the main triangle and it glows blue or flashes. It is bright enough to light up the bike and ME from the side and was only $25 bucks. I also found a 5" long light with a clip on the end that looks like a glow stick but runs on a 2032 battery and glows orange or blinks, and I put that on the back of my backpack. Everyone calls me the christmas tree rider but heck if you can't see me coming from any angle you are blind.