Unfortunately, there are no laws or standards dictating high visibility protection for runners or cyclists. A manufacturer can literally use any fluorescent fabric or shiny pseudo reflective material and call it high visibility. There are HiViz material and design requirements used to protect road maintenance and construction workers.
Considering the risks, our feeling is why not use the same proven technology DOT Safety Engineers depend on to protect the people who maintain the same roads we run, bike and train on? The challenge is making something highly protective but practical for endurance sports.
ANSI/ISEA 107 is the high visibility material standard used for more than 15 years to protect road workers exposed to vehicle hazards. Materials certified to meet ANSI107 are engineered specifically to achieve the greatest degree of HiViz protection practical for wearable apparel. The Videri vest only uses fluorescent fabric, retroreflective tape, and design rationale that meets ANSI/ISEA 107. While also being designed for rigorous endurance activity and not at an exuberant cost.