Amber Solar Road Stud Light For Motorway-NOKIN Solar Road Reflective road studs are one of raised pavement markers. Amber reflective studs on motorway is used for dividing the road boundary,for safety,reducing the accidents,made from aluminium alloy attached with the reflective sheet made from the acrylic plastic sheet.This acrylic is a reflective prism glass style and available 1 or 2 sides