Yes, they do all seem to be wearing reflectors, but still...IT'S NIGHT TIME! Get on the other side of the road and OFF THE STREET! Pleasanton has really nice sidewalks that you can run on...I do all the time!
I've come within two feet of hitting one of them recently as I rounded the corner at the top of Bernal. I can't help but utter expletives towards these seemingly dumb bunch of risky night joggers. It's just a matter of time before someone veers into their path and takes one out...a matter of time. Good luck!