It's amazing that I allow myself to ride on any streets at all since every day at the office I encounter individuals who won't wear their eyeglasses while driving and so often their visual acuity will be a lousy 20/50, 20/80 or worse. (In layman's terms, that means that they have to be as close as 20 feet to see something that someone with normally good vision can see at 80 feet) Because of this, like said above, I believe strongly in wearing very high visibiltiy shirts and jackets. I know some think it's not cool but I would rather be square and remain alive then die wearing a cool designer (but not as visible) jersey. The fellow riding in the rain above with the hat on, probably couldn't be wearing any more bland colored clothing and blends right in on a quick glance. Blinking lights help as well and though I enjoy it, try not to ride at night, dusk or low light times of the day.