Horseshoe Solar Road Stud Reflector For Road Safety In. 21/10/2013 · Solar road stud is a kind of road stud powered by solar energy; It is the new age replacements for the conventional Reflective Road Studs, popularly known as CAT EYES; Road Stud by solar power can provide clear marking of the road edge, and direction for drivers at night and during bad weather conditions, such as: fog, rain, and so on.