Please don't forget to make the human visible too when you walk at night!
Wear a yellow or orange safety vest covered with reflective strips! They're as little as $10 on Amazon and can easily slip over a coat if needed. We have mesh ones that are breathable for running, and they have lasted through washing very well. There are no batteries to run down or recharge.
My neighborhood has almost no street lights, and lots of people walk in dark clothing. Sometimes the only way I can spot them is a tiny sparkle near the ground from reflectors in running shoes. It is SO dangerous.