Researchers in the US are looking into whether road barriers used to reduce noise pollution could also be fitted with photovoltaic panels to generate electricity.
The project is looking into possible designs and the costs and benefits of the idea.
The work is being carried out by a team that includes engineers from the US Department of Transportation’s Volpe Centre in Massachusetts, UK transport consultant Innovia Technology and innovation foundation the Ray, which previously tested 50 sq m of energy-generating solar roadway in the Georgia region.