i've seen a few references to this recent study, but this is the first time i've seen the actual study. at six pages it's a very good read.

http://dl.dropbox.com/u/1079188/Stud...at%20night.pdf

i would like to see a study that skips the knee-reflectors, since i've never seen those incorporated into cycle clothing. at the same time, maybe this study will inspire such clothing.