Simulation analysis of reflective performance of marking glass beads

Abstract Road traffic markings are made of glass beads embedded in paint. To analyze the effects glass-bead radius, embedment depth, correlated color temperature light sources, and incident angle on reflective performance beads, a numerical model is established using geometric optics method, effective conditions analyzed, calculation methods for optical power devised, non-standard planes calculated. Calculations were also carried out. Results show that retroreflective properties positively with source radius beads. The radii, depths, angles have little effect their performance. Moreover, an important factor affecting accuracy measuring When retro reflectometers, standard reflectance-measuring devices reflectance measurement, other equipment to evaluate road markings, should be as close possible 2856 K.