Uniformity is a critical factor at low luminance levels, such as those found in tunnels. Opposed to conventional tunnel lighting solutions where light points are distributed more separated and less uniformly, IOHNIC solution provides 100% uniformity.

This uniformity is especially relevant after a power failure when emergency lighting is activated. In this case, IOHNIC solution keeps all the light points turned on. Consequently, uniformity is close to 100% at these critical luminance levels. Contrary, conventional solutions use other methods. They usually switch off luminaires to reduce the luminous flix, therefore decreases uniformity and reduces visibility. 

Additionally, IOHNIC uniformity ensures the removal of flickering effect caused by the separation of the luminaires and the driving speed. 

Glare causes the pupil to contract, blocking light from entering the eye and reducing visual sensitivity. Using a closed optic on traditional luminaires would create an effect of light-darkness on the road. However, IOHNIC uses closed optics and eliminates the disability glare thanks to its continuous and close arrangement of luminaires.

In other words, inside the ‘glare zone’, the light beams do not reach the driver’s eyes, which means that IOHNIC can eliminate the uncomfortable glare.

IOHNIC, as a linear and continuous solution, provides guidance or guiding effect. This enables drivers to predict the trajectory of the tunnel by means of lateral lights, which help the driver to position the vehicle in the right place. It is very important for the driver to always know where the road limits are.

This is the same effect that takes place in airport runways at night.

Luminance levels are adjusted to those required by the International Commission on Illumination (CIE), combining the highest standards of safety and precision. 

Reinforcement lighting is that located in the access of the tunnel, acting as transition luminaire to the inner part. Tunnel lighting regulations specify luminance levels at the tunnel entrance that are proportional to the luminance of the tunnel entrance during the day. Generally, three regimes are implemented: sunny, overcast and twilight. When the day begins to lighten, twilight mode is activated, and when the outdoor luminance reaches a value higher than the value set in the twilight mode, the system switches to overcast mode. This ensures the proper luminance level from dusk to dawn. With IOHNIC, we achieve a much more precise adjustment of energy consumption because the power of the reinforcement lighting is adapted to the external lighting conditions in real time.

The figure below shows the adjustment of the IOHNIC system: 

The real-time power adjustment can vary with the outdoor luminance, but it can also be adapted to the traffic characteristics, so that the flux decreases along with the intensity of the traffic. IOHNIC is on the cutting edge in this regard, because the adjustment of flux based on traffic levels has not yet been included in national regulations.

The extra power of the driver makes it possible to compensate for the loss of LED flux due to wear and dirt each year, and to reinforce areas compromised by accidents, obstacles, or maintenance work. The additional power also reduces the frequency of cleaning by compensating for the loss of flux with an increase in luminous load.

IOHNIC’s maintenance is easier thanks to the LED module and driver independence. In the case of substitution, only the affected product must be changed. With this measure, we increase the life span of the undamaged product and reduce waste production.

IOHNIC lighting is designed specifically for each tunnel. One of the specific characteristics calculated is the angle of projection of the light beam. This is very important because the lens used in the IOHNIC system is designed to direct the light exactly where it is needed, so the optimum angle will vary depending on the dimensions, shape, and location of the luminaire inside the tunnel.