There's another side to this story - about being blinded by runners outfitted like long-haul trucks.
During summer I trail run just after dawn to beat the heat (whereas I run in the late afternoon in winter). In effect I run during the dawn twilight.
I can see very well in the soft morning light. That is, until a UFO-like monster comes glaring from the next bend with Lightforce LEDS beaming from their head, arms and body. I have to stop as I am blinded, and it takes a pause until my eyes can see the track again.
Running at night - sure LED-up. At dawn - let's apply a little common sense. If my 73 year old eyes can see the track, and I can run every day without injury, then you can too - without equipping like a lighthouse. Thank you.