Blinking Solar Road Stud Supplier In Durban-NOKIN Solar . Solar road studs and LED hardwired studs are ideal for this purpose. SOLAR ROAD STUD CASE STUDIES In 2003 a two-year pilot project was carried out in KwaZulu-Natal (KZN), north of Durban along the R66, in which 7 800 solar road studs were installed along a 34 km stretch of road.