We use tempered glass that is particularly strong and that is mounted in a concrete housing. The strength of the glass in the housing is being mechanically tested in different ways. For example, extreme traffic loads are simulated in a bench press, pressing different tyre types on the surface with great force. Also, we drop steel balls and bags with marbles of different sizes and from different heights on the SolaRoad surface, in order to test the resistance to impact loads. This is based on internationally recognized standards. In this way, we test whether the glass is safe for use in practice.