Reflective Steps

The highway is dark. There are no overhead lights and there are no other cars on this stretch. Something made of highly reflective material catches my headlights. It looks like a loop, but I can't tell what it is.

Suddenly it rises, moves forward and comes down.

As I get closer I realize it is a person cloaked in darkness. It looks like a shadow moving in the night. With reflective cuffs on his pants. I never would have picked him out of the darkness if I hadn't seen those reflective steps.