retroreflectors
/ˌrɛtroʊrɪˈflɛktərz/
noun
- Objects or surfaces that reflect light back toward its source, often used on roads, vehicles, or clothing for safety.
- Road signs use retroreflectors so drivers can see them clearly in the dark.
- The bicycle had retroreflectors on the pedals and rear fender to make it visible at night.
- The jogger's vest was covered in retroreflectors for safety during early morning runs.