SIZE: 4.33"x 3.54"/ HEIGHT 1.18" / WEIGHT 0.86 LBS. SolaRight is the originator and patent holder of the Solar Road Marker. SolaRight’s YHYS (IIRPM) is one of its most versatile lights. Designed to work well on jersey barriers, curb tops and bullnoses, the YHYS IIRPM also works in many other capacities.