2/3/2034 Micro – As I was riding on the I-66 Parallel Trail I started noticing a lot of bullseye reflective stickers taped to the sound barrier wall. It turns out they are used for survey work. Reflective stickers/tape work because of the MICRO glass beads or prisms imbedded in the stickers to catch and reflect the light back to the light source. The top sticker is without flash and the bottom sticker is with flash. (This was mid day and I was probably a bit close to the sticker.)
