Originally Posted by volosong

Most of us here know exactly what you are referring to, but in the case that newbie or someone not quite so familiar stumbles upon this thread, I'd like to point out that, while yellow colored cycling clothing help; the "better", more visible color is chartreuse. One can purchase vests/jackets/etc. in yellow, however for greater visibility, if that is your goal, opt for a chartreuse colored vest/jacket instead.