I have a fluoro yellow jacket. Makes me look like a sherbet lemon, but I do tend to wear it during inclement conditions or if I am about during twilight. I figure it can't hurt and it's not every day I get to dress up as a sweet. I usually opt for something with Scotchbrite after dark since it is spendiferously bright if caught in headlights. That and a decent front light.
Since I figure there's something vaguely illegal about handlebar mounted miniguns, I usually just assume that drivers will select the stupiest option available to them in any given situation. After all, I was hit the other week in perfect daylight conditions - why? - the driver didn't look, he just pulled out. I could, frankly, have dressed as a twenty foot tall giant purple flashing dildo and he still wouldn't have noticed. Because. He. Did. Not. Look. He's sorry, of course. He'd be sorrier if I had that minigun, that's for sure.
Some horrific driving in the rain today. For the benefit of the esteemed drivers of the London Borough of Bromley, rain is the wet and slippy stuff that falls from the sky. Just because it's not inside your car doesn't mean that it's not there.