Chinese road glass beads/glass bead BS 6088 A/B, AASHO M247 TYPE I/II, EN ... 1423, PRE-MIX TYPE EN 1423/1424, AS2009 Reflective glass beads ... , it is mainly used for road marking. The glass beads for road marking can improve the retro-reflective performance of ... night, the lamp shines on the marking line with glass beads in it, the ray of lamp is reflected back ...