I saw a couple women out jogging wearing vests with some sort of LED light arrays that flashed and changed colors in patterns - kinda reminded me of the bill board mega screens in time square. No way a driver couldn't see them from a mile away.
At work I witnessed a fellow get hit by a suv. It hit him so hard that it threw his tied boot around 50 foot. He was wearing all black including his boots. He gained consciousness and thought he just fell. He couldn't believe he was hit. I called the paramedics first and then talked to him. Had him stay down and not move. He wanted me to give him his boot so he could go. He was obviously in shock and probably bleeding internally. This happened at night. It is good to stay visible in traffic.