TUNNEL SENSORS
Model: LUMIOS MkIII
The LUMIOS MkIII measures the level of luminance, or brightness, created by natural light at the tunnel portals to ensure that the visual perception of drivers is maintained, both day and night, by avoiding sudden variations in lighting levels and potential “black hole effect” when entering and exiting a tunnel. The LUMIOS MkIII can also be used for the measurement of luminance within the tunnel.
