Tunnel Safety Devices

T4 is an integrated LED signaling device engineered for tunnels safe following
distrance signaling.

Developed by Sirena to fulfill the increasing demand for a device specifically
tailored for these growing applications.
Tunnels safety is constantly increasing
and both European Tunnel Managers and Regulators are more and more
conscious that providing the highest standards to customers is the major
part of the day-to-day business.
Nowadays technology allows bringing to
the market devices that can significantly change safety inside tunnels and
drastically reduce incidentsaswell as near-incidents.

T4 is developed to give drivers a rich but yet not disturbing guide light,
helping visually measuring the distance from the car in front: amber lights
can be placed every 5 meters, tobealternated with one blue light every 25
meters.

This combination allows an immediate perception of the distance with the
car in front helping tremendously in case of sudden stops and preventing
incidents. T4 has a built-in back-up technology: it hasbeen developed
over two independent electronic circuits which function as back-up to one
another incaseof one circuit failure.


Tunnel Safety Devices