Start Date: 2002
End Date: On going
A very short artificial tunnel that heavy vehicles are forced to travel before entering the actual tunnel. Inside there is a series of optical sensors – in the visible and infrared field – connected to a processing system and to some service stations for emergency management.
An innovative system called Fire Detector, useful to identify the thermal anomalies of vehicles before they enter into a tunnel (road or rail). The Fire Detector is installed for the first time at the Frejus Tunnel (T4), an important cross-border tunnel about 13km long.