In a glass bead system, light strikes the back surface of the bead and is returned to its source. Retroreflection – Retroreflection occurs when surfaces return a portion of directed light back to the light source. In the case of nighttime visibility, retroreflectivity allows light from car headlights to be bounced back towards the light source, which is the driver.
This is the most effective way to increase visibility in a low light and night time environments.
