The Current Status of Roadways Solar Power Technology: A Review

Shining above, the sun has always been an obvious source of energy and recently it has been used on roadways also to produce electricity. The “Raised pavement markers” (RPMs) have been in use in Oregon for many years. A study by Oregon Department of Transportation (ODOT) in 2004 suggested that the solar powered RPMs can be used on the roadway pavements satisfactorily. This study included laboratory testing and field observations. Light Emitting Diodes (LED) is fixed inside the Solar Raised Pavement Markers (SRPM). They can be used along the sidewalk pathways. Photovoltaic (PV) cells work by using semi-conductors to absorb light and create a flow of electrons. The advantages of using the solar powered roadways are not immediately felt right after the construction. The solar photovoltaic panels can be placed on the sound barrier walls and on bridge structures also. This paper deals with the current status of technology related to the solar panels that are used on roadways, bicycle paths, pedestrian sidewalks and along roadside. This paper also discusses the pros and cons and the feasibility of using the solar energy from the roadway pavements, parking lots, sidewalks, bicycle paths and roadside.