Uhhh, ride at night!?
When I ride at night I use a couple of headlights ($25 each/ 1 with strobe mode), a red blinkie in the rear, and the tri colored reflector bands. I found them most visible after doing some experiments of my own. I placed an illumminite vest, a lited belt, ankle bands and a red blinkie on Gina. Sent her off down the road, then followed in my truck. I found the motion of the ankle bands was most noticeable. Same with nightjoggers and those little tabs on the back of their shoes. Very noticeable with the motion!
Check out the ankle bands