Underground solar road stud traffic pedestrian crossing. Solar Road Stud Light (Solar Road Stud), also known as solar cat eyes, solar pavement markers, LED road stud lights, etc., Solar Road Stud Ligh is the use of solar panels charged, stored in the battery, until the night and the rain and fog when the light is not enough to automatically light, very good to guide the vehicle to drive in the right direction, effective protection of traffic safety.