Glass bead retroreflection technology uses very small spheres (glass beads) to complete the function of light reentry. Using this principle of retroreflection, we can make use of the illumination of the lamp and the original reflection of the light to “light up’’ the front, so that the place where the reflective film is pasted is brighter than the surrounding environment, so as to improve the distance for the driver to find the object in front.it is an efficient and cost-effective traffic safety guarantee scheme.