retroreflective

/ˌrɛtroʊrɪˈflɛktɪv/
adjective
  1. Designed to reflect light back toward its source, making the object appear bright when light shines on it.
    • Children's backpacks often have retroreflective strips for safety in the dark.
    • Many road signs are made with retroreflective materials so drivers can see them at night.
    • The retroreflective tape on the worker's jacket glows when car headlights hit it.
Synonyms
What does "retroreflective" mean? | whatsthatwordmean | whatsthatwordmean