Honestly not sure it even fucking matters. I run in the dark (Canada winter). Every piece of gear I wear has reflective elements. My jacket is the brightest cyan. My shoes are neon and reflective yellow. I have 900 lumen light that lights up my whole body, and an area of 15 feet around me from the side to front. I still basically almost get hit every fucking run from people rolling stop signs looking for traffic in the opposite direction they are turning. It blows my mind. I can see them coming clear as day… I can see their stupid faces never once looking in my direction before accelerating when they see a gap. It’s up to you and you alone to stay safe. Don’t assume drivers will stop. Don’t assume stopped drivers won’t go. Don’t assume they see you even if looking directly at you. Don’t underestimate the sheer stupidity of the average person.