solar road stud Tunnel with anchors company-Nokin Road Studs. SolarVision develops and manufactures road construction Solar Road Studs, for the marking of pedestrian crossings, roundabouts, traffic islands etc. Our products are made of active shining LED light source and are fully autonomous over several years. round with anchor solar led aluminum road stud. Solar Roadlite LED Road Studs™ in the UK have been shown to reduce nighttime accidents 70%, according the company.