•Anchor holes or the adhesive bond for dual fixation. •Long life span 5-8 years. •Led solar road stud accept OEM/ODM . Five colors for choice: White, Amber, Red, Blue, Green. PC solar road stud motorway with anchors-Nokin Road Studs. company news. Wireless Solar LED Road Stud For Wisdom Road Of Smart City 2017-8-11.