Dec 17, 2022 · The advantages of solar road stud: 1. High brightness. The brightness of ordinary reflective road stud is only 300 MCD to 400 MCD, while the brightness of led solar road stud can be up to 2000 MCD, 6 to 7 times of the former. The high brightness light from the led road stud can penetrate fog at night to guide the driver safely and effectively. 2.