SolaRoad has been laboratory tested at TNO for structural strength. A specific ‘tree root test’ has not been carried out, but the concrete elements have been designed and manufactured in such a way that they will not break easily. In order to prevent elements from rising unevenly from the bike path, extra attention has been paid to the way they are interconnected. In dealing with factors from the (natural) environment, we make as much use as possible of existing knowledge and experience with elementary pavements.