Tunnel lighting with LED and sodium vapor lamps

 

Comparative study of the effect of tunnel lighting with LED and sodium vapor lamps on vehicle drivers

In the investigation, a comparison of the interior lighting of the tunnels was carried out. The new LED lighting in the Höllbergtunnel was compared with conventional lighting using sodium vapor lamps in the Heidkopf tunnel. The study consisted of a field test with a total of 33 testing candidate (18 under day lighting, 15 under night lighting), which both tunnels as drivers and then were interviewed in a standardized interview.