For 18 months I had a commute that included a 10 mile stretch of pitch black MUP. I used a HB light to light the trail surface just ahead of me and a helmet mounted light to look WAY up the trail. It is nearly impossible to wear any sport shoes or clothes without some reflective bits on them and having a tight beam spot light near my eyes would light up those reflective bits very far in advance. Also, many of the peds on this stretch carried some kind of light with them. Most were pathetically inadequate but I was always grateful for their efforts.