The column can be manufactured incorporating luminophore.
During the day, the luminophore contained in the column stores light energy from the sun. Then, at night, it releases that energy as light, over its surface. This produces a “delicate light mist” – another attractive landscaping feature.
From a safety aspect, luminophore is also stimulated by the lights from passing vehicles, thus in the case of power outages, the lighting columns and street edges are still visible to drivers.
If luminophore is also lit from a UV light source within the column, the material is stimulated to emit light and thus add to visibility of carriageway edges.