Monthly Archives: February 2013

New Product Alert – LUMIOS MkII Tunnel Luminance Photometer

Thu 28 Feb 2013

Tunnel Sensors launches the next generation luminance photometer, the LUMIOS MkII, designed specifically for use in tunnels. The aim of road tunnel lighting is to ensure that traffic can approach, travel through and leave a tunnel safely, both during the … More

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We have developed a good working relationship and received excellent service throughout the installation and commissioning period. Since then, the instruments have performed very well.

Clive Dyche A.C.M.I.
Medway Tunnels, UK

Tunnel Sensors


The VIPA-L is a long path visibility monitor designed for use in ambient environments such as road, rail or other industrial applications.


The ILLIOS measures illuminance inside the tunnel bore to affect safe lighting conditions for drivers.


The LUMIOS MkIII measures the level luminance, or brightness, at tunnel portals to ensure that the visual perception of drivers is maintained, both day and night.