Solar Road Stud – Lighting Equipment Sales It is mounted on the road surface and flashes to warn the drivers. The LEDs are designed to be visible from a distance of about 1 km. It is more striking than normal reflectors in rainy and foggy weather. The battery in the Road stud is charged during the day, while in the dark air the LEDs start flashing. Solar Warning Light, Battery Warning Light – Alibaba.com We applied LED light and solar board in our products which are high efficien...