I do not have RoadID, though I typically carry an old drivers license on me. I used to feel that stealth mode was best, to not give drivers anything to aim at, intentionally or not. I have since reversed that and have acquired reflective gear, partly because I often stick to bike paths with cyclists whose lights might not be as strong as a car's headlights. Since I have had a deal for Brooks stuff, I got several of their Nightlife items, gloves, headband, vest, cap, jacket. There is even a cap that has light-up LEDs in the back. The Saucony High-Viz stuff looks pretty good, too. I tend to use a headlamp (PrincetonTec Corona) for any run after dark during winter months, simply to avoid stepping in potholes, ruts, and other things that could try to turn an ankle.